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本帖最后由 173837333 于 2015-6-3 20:43 编辑
我根据一个真实的案例,做了一个人人车碰撞模型,行人是根据假人缩放得来。在建模过程中遇到了一些问题:这个碰撞车速是44KM/h,但是头部加速度达到了2000多,似乎有点太大了。我还有一个模型在30km/h时,头部加速度达到了5000多。1.我想问一下,头部加速度太大是因为假人是缩放的,还是因为车辆前部刚度系数没调好?
2.假人缩放时需要注意些什么呢,好像缩放后的假人身高、体重都要大一点,会不会影响损伤分析呢?
3.我的刚度系数是参考的MADYMO中h_ped50el那个模型设置的,请问刚度系数哪里可以参考?
4.打开peak文件,里面有很多损伤参数,虽然理论手册里面有,但是还不是很理解,那些损伤指标的极限都是多少?
INJURY PARAMETERS
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INJURY PARAMETER ID....: /2/4012 ( /Scaled_Hybrid_III_5th/CTI_inj )
TYPE................: COMBINED THORACIC INDEX
VALUE...............: 0.46953
INJURY PARAMETER ID....: /2/4002 ( /Scaled_Hybrid_III_5th/T3MS_inj )
TYPE................: CUMULATIVE_3MS MAXIMUM
VALUE (m/s**2)......: 349.34
INJURY PARAMETER ID....: /2/1001 ( /Scaled_Hybrid_III_5th/HIC15_inj )
TYPE................: HIC
VALUE...............: 4558.6 ( T1 = 53.600 ms, T2 = 61.000 ms, WINDOW = 15.000 ms )
INJURY PARAMETER ID....: /2/1002 ( /Scaled_Hybrid_III_5th/HIC36_inj )
TYPE................: HIC
VALUE...............: 4558.6 ( T1 = 53.600 ms, T2 = 61.000 ms, WINDOW = 36.000 ms )
INJURY PARAMETER ID....: /2/7019 ( /Scaled_Hybrid_III_5th/TCFCUpL_inj )
TYPE................: TCFC
VALUE (N)...........: 22621.
TIME (ms)...........: 1491.9
INJURY PARAMETER ID....: /2/7020 ( /Scaled_Hybrid_III_5th/TCFCUpR_inj )
TYPE................: TCFC
VALUE (N)...........: 12315.
TIME (ms)...........: 1537.0
INJURY PARAMETER ID....: /2/7021 ( /Scaled_Hybrid_III_5th/TCFCLowL_inj )
TYPE................: TCFC
VALUE (N)...........: 29224.
TIME (ms)...........: 1491.9
INJURY PARAMETER ID....: /2/7022 ( /Scaled_Hybrid_III_5th/TCFCLowR_inj )
TYPE................: TCFC
VALUE (N)...........: 15699.
TIME (ms)...........: 1537.0
INJURY PARAMETER ID....: /2/4003 ( /Scaled_Hybrid_III_5th/VC_inj_CFC180 )
TYPE................: Viscous Injury Response (VC)
MAXIMUM VALUE (m/s).: 8.27512E-03
TIME (ms)...........: 21.200
INJURY PARAMETER ID....: /2/4004 ( /Scaled_Hybrid_III_5th/VC_inj_CFC600 )
TYPE................: Viscous Injury Response (VC)
MAXIMUM VALUE (m/s).: 8.27807E-03
TIME (ms)...........: 21.200
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