Zhang Shuaihao

Dear authors, thank you for you interesting work. I found that in Data.zip, there are only the data for AnisoMPM, while the data for IO-MPM (such as bear.obj) is not...

draft PR -- hourglass control (updated Lagrangian) for elasticity and plasticity

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Here, I will show the results when dealing with the hourglass control method for ULSPH.

Generalized non-hourglass formulation for ULSPH solid dynamics

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The generalized non-hourglass formulation for ULSPH solid dynamics. Constitutive models include elasticity and plasticity (with/without hardening) are considered. Two cases are uploaded for testing: `test_2d_oscillating_beam_ULGNOG` for elastic dynamics, and `test_3d_taylor_bar_UL`...