A Jones-Nelson model has been applied to depict nonlinearstress-strain relations of composite laminae, where mechanicalproperties were expressed by strain energy density. The nonlin- earmaterial matrix is only a funct...A Jones-Nelson model has been applied to depict nonlinearstress-strain relations of composite laminae, where mechanicalproperties were expressed by strain energy density. The nonlin- earmaterial matrix is only a function of the strain energy density. Thena material model could be conveniently applied under complex stresscondition. In this paper, by introducing large displacementstress-strain measurement and varying-Poisson's ratio idea, animproved Jones-Nelson material model is presented, where theexpanding problem of material properties and convergence problems areover- come.展开更多
文摘A Jones-Nelson model has been applied to depict nonlinearstress-strain relations of composite laminae, where mechanicalproperties were expressed by strain energy density. The nonlin- earmaterial matrix is only a function of the strain energy density. Thena material model could be conveniently applied under complex stresscondition. In this paper, by introducing large displacementstress-strain measurement and varying-Poisson's ratio idea, animproved Jones-Nelson material model is presented, where theexpanding problem of material properties and convergence problems areover- come.
