GMKOREA EDS-T-4573-2011 Test Procedure of Damping Characteristic.pdf

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1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-4573 Test Procedure of Damping Characteristic Do Not Use on New Program; No Replacement. Seat D3 4G 98 88x 7 , F6* 72T8p) F$ . 1.1 +95 . Seat Cushion -C Back8 D3 C2e G88x +958p) F$ . 1.2 957 -88 . +,# 7F$ . GM KOREA ENGINEERING STANDARDS EDS-T-

2、4573 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 4 of 5 Version : 3 Figure 3 / ,* 3 5.1.1 Damping ratio ( ). = loge 1/n (X1 / X2 + X2 / X3 + X3 / X4 . Xn-1 / Xn) Where, : Damping ratio. X: Amplitude. n: Number of waveforms bigger than 10 % of the amplitude of the fi

3、rst waveform. 5.2 Evaluations. The damping ratio shall satisfy the regulations in the drawings. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of th

4、e user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in ot

5、her documents, drawings, etc., as follows: Test to EDS-T-4573 5.1.1 D2/x ( ). = loge 1/n (X1 / X2 + X2 / X3 + X3 / X4 . Xn-1 / Xn) 7 d2P , : D2/x . X: :E! . n: 9P 1 DGI8 :E!8 10% -,+8 %T &: DGI8 3L . 5.2 D4 . D2/x# $+9P* +9F . 6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &%8x E FF 3L 8$ . ., E:48t 87

6、 $4F 170 4)%P +& 6|98 ,l9P8 F8x 9P4F:# 6#$ . &d(2P 17 987 95FF 6|980 I 1B* 9DF , -18 9PF 728 957 7 .* 9IF# 8t ., E:4 1788 =y8 1F8$ . 7 768 9I8 7.1 98,l 76 . F$-1F 68 . 7.2 66 -C dGl . F$-1F 68 . 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . Test to EDS-T-4573 GM KOREA ENGINEERING STANDARDS

7、EDS-T-4573 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 5 of 5 Version : 3 9 Release and Revisions This standard was originated in November 1998. It was first approved by Engineering Standard Committee in November 1998. It was first published in November 1998. 9 9P9I

8、 -C P9I 8)Y ., E:48t 1998“x 1187 E:4 -Gl4 .7 %L6 , d3TE:41,h7 8F 1998 “x 11 87 38%L6$ . ., E:48t 1998 “x 11 87 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 SEP 2011 Apply new Engineering Standard Template. Limited use with no replacement (Interior Subsystem Validation Team) / 4 d3TE:4 64 957 . F9I957 ($4=E:4 68 ) =* (Interior.ED4D4 )