A Quadrilateral Membrane Hybrid Stress Element with Drilling Degrees of Freedom

2007 ◽  
pp. 383-383
Author(s):  
A. P. Wang ◽  
Z. S. Tian
Keyword(s):  
Degrees Of Freedom ◽  
Drilling Degrees Of Freedom ◽  
Hybrid Stress Element ◽  
Hybrid Stress

Quasi-Static Crack Propagation Modeling Using Shape-Free Hybrid Stress-Function Elements with Drilling Degrees of Freedom

2016 ◽  
Vol 13 (03) ◽  
pp. 1650014 ◽  
Author(s):  
Song Cen ◽  
Yi Bao ◽  
Chen-Feng Li
Keyword(s):  
Crack Propagation ◽  
Stress Function ◽  
Degrees Of Freedom ◽  
Singular Element ◽  
Propagation Modeling ◽  
Drilling Degrees Of Freedom ◽  
Simulation Step ◽  
Crack Tips ◽  
Modeling Strategy ◽  
Hybrid Stress

A new plane shape-free multi-node singular hybrid stress-function (HS-F) element with drilling degrees of freedom, which can accurately capture the stress intensity factors at the crack tips, is developed. Then, a quasi-static 2D crack propagation modeling strategy is established by combination of the new singular element and a shape-free 4-node HS-F plane element with drilling degrees of freedom proposed recently. Only simple remeshing with an unstructured mesh is needed for each simulation step. Numerical results show that the proposed scheme is an effective and robust technique for dealing with the crack propagation problems.

A 4-noded hybrid stress element with optimized stress for moderately thick and thin shallow shells

2004 ◽  
Vol 40 (7) ◽  
pp. 691-709 ◽  
Author(s):  
Chengyu Zhang ◽  
Nong Zhang ◽  
Qigen Song ◽  
Shenglin Di
Keyword(s):  
Shallow Shells ◽  
Hybrid Stress Element ◽  
Hybrid Stress
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