Currently I’m using Impact software in cooperation with GiD preprocessor for my analysis. As is mentioned in Impact Help, Impact can handle any unit of indata, but GiD has a fixed units. For example, speed of loading is in m/s. I would like to use speed in mm/s. Currently I can prescribe this speed as for example 0.001m/s to obtain 1mm/s. Problem in this approach is overall time of analysis. I could increase the speed by defying the step size, but the analysis become unstable.
Is there any example utilizing slower speed? Can you please help me how to introduce this speed (in order of mm/s) into GiD with reasonable analysis time?
Thank you in advance,
Pavel
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you can use the mass scaling technique to adjust the time step, essentially you increase the material density which increases the time it takes or sound waves to cross the element. check the internet for full details.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Currently I’m using Impact software in cooperation with GiD preprocessor for my analysis. As is mentioned in Impact Help, Impact can handle any unit of indata, but GiD has a fixed units. For example, speed of loading is in m/s. I would like to use speed in mm/s. Currently I can prescribe this speed as for example 0.001m/s to obtain 1mm/s. Problem in this approach is overall time of analysis. I could increase the speed by defying the step size, but the analysis become unstable.
Is there any example utilizing slower speed? Can you please help me how to introduce this speed (in order of mm/s) into GiD with reasonable analysis time?
Thank you in advance,
Pavel
you can use the mass scaling technique to adjust the time step, essentially you increase the material density which increases the time it takes or sound waves to cross the element. check the internet for full details.