# OS-1315: Modal Transient Dynamic Analysis of a Bracket

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Hello sir

I’m working on a structural transient analysis and I’m facing some doubts. I kindly request for your suggestion.

Similar to OS-1315: Modal Transient Dynamic Analysis of a Bracket

Input: I’m working on the bracket which is of 2mm thickness. Constrain and excitation is at the same point of location(bolt connection)

Acceleration 50g

Nominal shock duration = 11ms

nominal shock shape = half sine

In OptiStruct:

In TIME STEP load collector i have used N=100 and increment=0.00011  (I have considered 100 steps for the time of 0.011seconds)

In TABLED1 load collector i have assigned x1=0 ,y=0, x2=0.0055, y=50, x3=0.011,y=0

In SPCD load collector i have assigned x=9810 (applying only along x direction)

Please let me know whether the input i have assigned is right are not.

Regards

Vinay

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Hi Vinay,

The input looks good for me

Thanks

Vikas

Rahul R likes this

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Thank you vikas

Rahul R likes this

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On 9/5/2017 at 8:46 AM, Vinay1005 said:

Hello sir

I’m working on a structural transient analysis and I’m facing some doubts. I kindly request for your suggestion.

Similar to OS-1315: Modal Transient Dynamic Analysis of a Bracket

Input: I’m working on the bracket which is of 2mm thickness. Constrain and excitation is at the same point of location(bolt connection)

Acceleration 50g

Nominal shock duration = 11ms﻿

nominal shock shape = half sine

In OptiStruct:

In TIME STEP load collector i have used N=100 and increment=0.00011  (I have considered 100 steps for the time of 0.011seconds)

In TABLED1 load collector i have assigned x1=0 ,y=0, x2=0.0055, y=50, x3=0.011,y=0

In SPCD load collector i have assigned x=9810 (applying only along x direction)

Please let me know whether the input i have assigned is right are not.

Regards

Vinay

@Vinay1005 can you send you file. im doing something similar and needed some help. thank you.