欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ABS 130-2004 GUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH《油轮150米或更长船腹超过0.4升油轮结构强度评估指南说明》.pdf

    • 资源ID:400565       资源大小:434.35KB        全文页数:56页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ABS 130-2004 GUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH《油轮150米或更长船腹超过0.4升油轮结构强度评估指南说明》.pdf

    1、 GUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH MAY 2004 American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 Copyright 2004 American Bureau of Shipping ABS Plaza 16855 Nort

    2、hchase Drive Houston, TX 77060 USA This Page Intentionally Left Blank ABSGUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH .2004 iii Foreword These Guidance Notes were developed as a direct response to requests from

    3、our clients to develop an analysis procedure for the forward and aft tank structure beyond 0.4L. This procedure is based on existing ABS SafeHull procedures included in the ABS Rules. It should be noted that ABS is currently working within IACS on the Joint Tanker Project (JTP) and some components o

    4、f these Guidance Notes have been developed using JTP procedures. It is understood that this process will continue and once the JTP Rules mature, these Guidance Notes will be unified with respect to components such as the net thickness, loads, acceptance criteria, etc. These Guidance Notes describe a

    5、 strength assessment procedure for cargo tank structures beyond 0.4L amidships in oil carriers having L greater than 150 meters. In addition to the Rule scantlings as required by Section 5-1-6 “Hull Structure Beyond 0.4L Amidships” of the ABS Rules for Building and Classing Steel Vessels (SVR), thes

    6、e Guidance Notes may be optionally applied to verify the strength adequacy of main supporting members using a set of standard design load cases. Application of the procedure is required for novel structural configurations or scantlings/details. This Page Intentionally Left Blank ABSGUIDANCE NOTES ON

    7、 THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH .2004 v GUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH CONTENTS SECTION 1 Introduction 1 1 Scope

    8、 of Application 1 3 Overview of Strength Assessment.1 5 Coordinate Systems.2 5.1 Ship Coordinate System for Ship Motion and External Pressure (Right Hand) 2 5.3 Tank Coordinate System for Internal Pressure (Left Hand) 2 5.5 Finite Element Coordinate System (Right Hand).3 7 Nomenclature.3 FIGURE 1 Ou

    9、tline of the Strength Assessment Procedure.5 FIGURE 2 Tank Coordinate System for Internal Pressure6 SECTION 2 SafeHull Dynamic Load Criteria7 1 General 7 3 Vertical Wave-induced Bending Moment.7 5 Horizontal Wave-induced Bending Moment 8 7 External Pressure 8 9 Internal Pressure9 9.1 Effective Pitch

    10、 Amplitude 9 9.3 Effective Roll Amplitude 9 9.5 Effective Accelerations10 9.7 Internal Pressure.11 11 Bottom Slamming Pressure .11 TABLE 1 kloCoefficient .8 TABLE 2 Coefficient.12 TABLE 3 Aiand BiCoefficients12 FIGURE 1 Distribution Factor for Vertical Wave-induced Bending Moment mv.13 ABSGUIDANCE N

    11、OTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL vi CARRIERS 150 METERS OR MORE IN LENGTH .2004 FIGURE 2 Distribution Factor for Horizontal Wave-induced Bending Moment mh.13 FIGURE 3 Pressure Distribution Function klo14 FIGURE 4 External Pressure Calculation Poin

    12、ts 14 SECTION 3 Standard Design Load Cases . 15 TABLE 1 Standard Design Load Cases15 FIGURE 1 Standard Design Load Cases for Oil Carrier with Two Outer Longitudinal Bulkheads Only .16 FIGURE 2 Standard Design Load Cases for Oil Carrier with Two Outer Longitudinal Bulkheads and One Centerline Longitu

    13、dinal Bulkhead 18 FIGURE 3 Standard Design Load Cases for Oil Carrier with Two Outer Longitudinal Bulkheads and Two Inner Longitudinal Bulkheads.22 SECTION 4 Structural Modeling and Analysis 27 1 Net Ship Approach.27 3 Structural Idealization 27 3.1 Extent of Finite Element Model27 3.3 Finite Elemen

    14、t Modeling28 5 Boundary Constraints for Local and Hull Girder Sub Load Cases.29 5.1 Local Sub Load Case 29 5.3 Hull Girder Sub Load Case30 7 Overall Check of Finite Element Results .30 TABLE 1 Nominal Design Corrosion Values (NDCV) .31 FIGURE 1 Nominal Design Corrosion Values (NDCV) .32 FIGURE 2 Typ

    15、ical Finite Element Model for Foremost Cargo Tank Structure32 FIGURE 3 Typical Finite Element Model for Aftmost Cargo Tank Structure33 FIGURE 4 Modeling of Bracket Toe and Tapered Face Plate 33 FIGURE 5 Boundary Constraints for Local Sub Load Cases34 FIGURE 6 Loads and Boundary Constraints for Hull

    16、Girder Sub Load Cases.35 SECTION 5 Acceptance Criteria . 37 1 General 37 3 Yielding Failure Mode 37 3.1 Field Stress .37 3.3 Local Stress.37 3.5 Hot-Spot Stress.38 ABSGUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH

    17、 .2004 vii 3.7 Allowable Stresses for Various Finite Element Mesh Sizes .38 5 Buckling Failure Mode .38 5.1 Buckling Control Concepts39 5.3 Buckling Criteria40 TABLE 1 Allowable Stresses (kgf/cm2) for Various Finite Element Mesh Sizes 38 FIGURE 1 Coordinate System for Buckling Strength Evaluation 40

    18、 SECTION 6 Documentation of Strength Assessment for Classification Review 41 APPENDIX 1 Calculation of Critical Buckling Stresses 43 1 General 43 3 Rectangular Plates.43 5 Deep Girders, Webs and Stiffened Brackets.44 5.1 Critical Buckling Stresses of Web Plates and Large Brackets 44 5.3 Effects of C

    19、ut-outs.44 5.5 Tripping .44 7 Stiffness and Proportions.45 7.1 Stiffness of Web Stiffeners45 7.3 Stiffness of Supporting Members 45 7.5 Proportions of Flanges and Face Plates .46 TABLE 1 Buckling Coefficient Ki.47 This Page Intentionally Left Blank ABSGUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CAR

    20、GO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH .2004 1 SECTION 1 Introduction 1 Scope of Application These Guidance Notes describe a strength assessment procedure for cargo tank structures beyond 0.4L amidships in oil carriers 150 meters or more in length. In a

    21、ddition to the Rule scantlings as required by Section 5-1-6 “Hull Structure Beyond 0.4L Amidships” of the ABS Rules for Building and Classing Steel Vessels (Steel Vessel Rules), these Guidance Notes may be optionally applied to verify the strength adequacy of main supporting members using a set of s

    22、tandard design load cases. For designs with satisfactory service experience or designs that have been subjected to other forms of engineering analysis, these Guidance Notes need not be applied. However, application of these Guidance Notes is required for novel structural configurations or scantlings

    23、/details. The primary concern for main supporting members is the strength adequacy against external sea and internal liquid pressures while the hull girder load effects in these members tend to be less significant. Cargo tank structures within 0.4L amidships are to comply with the requirements of Se

    24、ction 5-1-4 “Initial Scantling Criteria” of the Steel Vessel Rules and Section 5-1-5 “Total Strength Assessment” of the Steel Vessel Rules and are to be directly evaluated by using the ABS SafeHull System. The strength assessment procedure in these Guidance Notes is not applicable to cargo tank stru

    25、ctures within 0.4L amidships. The description of the procedure in these Guidance Notes is aided by figures for forward cargo tank structures only, but the same procedure is also applicable to aft cargo tank structures (excluding bottom slamming and green water pressures). The parameters in these Gui

    26、dance Notes are defined in ABS SafeHull units and coordinate systems. If the measurement units and/or coordinate systems are different from these specifications, conversion is to be done appropriately. 3 Overview of Strength Assessment The core of the strength assessment procedure is the SafeHull dy

    27、namic loading concept. It is generally expected that local dynamic loads experienced by cargo tank structures beyond 0.4L amidships can be more severe than those within 0.4L amidships. Section 1, Figure 1 shows the outline of the procedure. In these Guidance Notes, the strength assessment procedure

    28、is described in five Sections: Section 2 SafeHull Dynamic Load Criteria Section 3 Standard Design Load Cases Section 4 Structural Modeling and Analysis Section 5 Acceptance Criteria Section 6 Documentation of Strength Assessment for Classification Review Section 1 Introduction ABSGUIDANCE NOTES ON T

    29、HE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL 2 CARRIERS 150 METERS OR MORE IN LENGTH .2004 The dynamic load criteria given in Section 2 of these Guidance Notes are consistent with those given in Section 5-1-3 “Load Criteria” of the Steel Vessel Rules for oil carriers.

    30、 Simplifications to the dynamic load formulae are introduced with special emphasis to application of the strength assessment procedure using recognized finite element modeling/analysis/post-processing software tools such as FEMAP, PATRAN, NASTRAN and ANSYS. The standard design load cases given in Se

    31、ction 3 of these Guidance Notes represent combinations of individual design load components defined in Section 2 of these Guidance Notes for cargo tank structures beyond 0.4L amidships. When warranted, additional design load cases are also to be analyzed to verify the strength of main supporting mem

    32、bers against wave impact on bow, bow flare slamming and sloshing. Section 4 of these Guidance Notes describes the finite element modeling and analysis techniques generally used for cargo tank structures beyond 0.4L amidships. These techniques may be substituted by alternative techniques. It is recom

    33、mended that consultation with ABS on the alternative techniques be made before commencing structural idealization. The acceptance criteria for the strength assessment procedure are consistent with those in Section 5-1-5 of the Steel Vessel Rules and also given in Section 5 of these Guidance Notes fo

    34、r ready reference. Appropriate documentation of the strength assessment described in Section 6 of these Guidance Notes is essential for ABS plan approval. A complete technical report is to be prepared as supporting data of design and submitted together with the relevant plans for ABS review. 5 Coord

    35、inate Systems Three sets of Cartesian coordinate systems are used to describe SafeHull load criteria and finite element modeling in these Guidance Notes. When alternative coordinate systems are used, attention should be paid to the default coordinate systems used in the dynamic load formulae in Sect

    36、ion 2 of these Guidance Notes. 5.1 Ship Coordinate System for Ship Motion and External Pressure (Right Hand) Origin Intersection of the AP section, waterline and centerline planes. xTLongitudinal distance from the AP to the center of the tank, in m, positive toward bow. yTVertical distance from the

    37、waterline to the center of the tank, in m, positive above and negative below the waterline. zTTransverse distance from the centerline to the center of the tank, in m, positive toward starboard. x Longitudinal distance from the AP to the external pressure point considered, in m. xoLongitudinal distan

    38、ce from the AP to the reference station, in m. The reference station is the point along the vessels length where the wave trough or crest is located and may be taken at the mid-length of the considered tank. 5.3 Tank Coordinate System for Internal Pressure (Left Hand) Origin Intersection of the vert

    39、ical, horizontal and transverse planes that are tangential to the envelope of the tank. This origin is also referred to as the zero dynamic pressure point. For example, the zero dynamic pressure point in Section 1, Figure 2 is located at the upper corner of the aft transverse bulkhead on the port si

    40、de, and the forward portion of the tank on the starboard side is under high dynamic pressure and is targeted for strength assessment. Section 1 Introduction ABSGUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH .2004

    41、3 xlLongitudinal distance from the zero dynamic pressure point of the tank to the pressure point, in m, positive toward bow for a fore cargo tank structure. ylVertical distance from the zero dynamic pressure point of the tank to the pressure point, in m, positive downward. zlTransverse distance from

    42、 the zero dynamic pressure point of the tank to the pressure point, in m, positive toward starboard. 5.5 Finite Element Coordinate System (Right Hand) Origin Intersection of the baseline, centerline and aftmost transverse planes. X Longitudinal distance from the origin, in cm, positive from aft to f

    43、ore. Y Vertical distance from the origin, in cm, positive upward. Z Transverse (athwartship) distance, in cm, positive toward starboard. 7 Nomenclature Ascross sectional area of the spring bar, in cm2Asheareffective shear area of a hull girder cross section, in cm2and can be taken as the sectional a

    44、rea of each side shell, longitudinal bulkhead, deck, inner bottom or bottom in question aleeffective longitudinal acceleration, in m/sec2, positive forward ateeffective transverse acceleration, in m/sec2, positive starboard aveeffective vertical acceleration, in m/sec2, positive downward B molded br

    45、eadth, in m bihalf breadth at the 1/10draft of the i-th section in the heavy ballast condition, in m bi*half width of flat of bottom at the i-th section, in m Cbblock coefficient at the scantling draft dbdraft amidships in the heavy ballast condition, in m dfscantling draft, in m didraft at the i-th

    46、 section in the heavy ballast condition, in m dmdraft amidships for a specific loading condition, in m doi 1/10of the section draft of the i-th section in the heavy ballast condition, in m fyminimum specified yield point of the material, in kgf/cm2fuminimum specified tensile strength of the material

    47、, in kgf/cm2Fbifreeboard from the highest deck at side to the load waterline (LWL) at the i-th section GM metacentric height, in m hshydrostatic pressure head in still water, in m kceload combination factor for external pressure Section 1 Introduction ABSGUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF

    48、CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL 4 CARRIERS 150 METERS OR MORE IN LENGTH .2004 kclload combination factor for effective longitudinal acceleration kcmhload combination factor for design horizontal wave-induced bending moment kcmvload combination factor for design vertical wave-induc

    49、ed bending moment kctload combination factor for effective transverse acceleration kcvload combination factor for effective vertical acceleration kcload combination factor for effective pitch amplitude kcload combination factor for effective roll amplitude krroll radius of gyration, in m ksload factor for internal pressure L scantling length, in m LBPlength between perpendiculars, in m lslength of the spring bar, in cm ltcargo tank length between transverse bulkheads, in cm Mwsvertical sagging wave-induced bending moment, in tf-m Mwhvertical hogging wave-induced bending moment, in


    注意事项

    本文(ABS 130-2004 GUIDANCE NOTES ON THE STRENGTH ASSESSMENT OF CARGO TANK STRUCTURES BEYOND 0.4L AMIDSHIPS IN OIL CARRIERS 150 METERS OR MORE IN LENGTH《油轮150米或更长船腹超过0.4升油轮结构强度评估指南说明》.pdf)为本站会员(unhappyhay135)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开