Dear K.S. Verma,

it would be helpful if you specify what type of test you are modeling. For example, for a quasi-static experiment with a displacement control mode, think about the displacement target value you want to apply at the component you test. Then, the rate of this loading condition can be obtained by a standard or by yourself and via that rate you can obtain the time that the loading condition needs to reach your target value.

So I am thinking that you can begin from that point by selecting the time period within this approach. Thereafter, you should consider to check the kinetic energy of your model remaining in whole duration of analysis in a small percentage of the model's internal energy. You might need also to implement a mass scaling technique to achieve artificially reduction of inertia phenomena.

Hope this answer helped you,

Regards

PS: A helpful link for the aforementioned technique:

https://caeai.com/blog/what-mass-scaling-and-when-it-appropriate-explicit-dynamics-analysis

Thanks a lot

h = Smallest element dimension in the model , How to find this value in abaqus

You define the element size of your model. For example, if you mesh your part with a global size of the finite elements that will be the value of h at the Courant condition.

Do may i use approximate global size value

Yes, that would be nice. It's an efficient way to discretize your part and also you can fast conduct convergence studies.

will 0.05 the value of h