What is the effect of strain softening on the non linear analysis of RC membrane element subjected to biaxial state of stress?

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Amjad Albayati

to increase the accuracy of FEM analysis

Abbas AbdulMajeed Allawi

Who suggested the strain softening first time????

Mohannad H. Al-Sherrawi

Strain-softening is a decline of uniaxial stress at increasing strain or,

generally, a situation where the matrix of tangential elastic moduli ceases

to be positive-definite.

The Modified compression-Field theory for reinforced concrete elements subjected to shear

http://www.civ.utoronto.ca/vector/journal_publications/jp2.pdf

Good article DR Mohanned.

But now, there is more advanced theories rather than modified compression field theory Dr Mohannad!!