A new elastoplastic shell element formulation for DYNA3D

Conference · Wed Aug 01 04:00:00 EDT 1990

OSTI ID:5993524

Engelmann, B E; Whirley, R G

The analysis of shell structures undergoing dynamic elastoplastic deformation is an important capability of DYNA3D. This paper presents an improved formulation for a 4-node quadrilateral shell element for explicit dynamic analysis. The proposed element is derived from a three-field weak form, and incorporates recently developed assumed strain methods for improved accuracy. In addition, the element is formulated in a large-displacement small-strain setting for minimum cost. Complex nonlinear constitutive models are easily incorporated into this formulation. Numerical examples illustrating the accuracy, robustness, and speed of the new element are shown. 13 refs., 3 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5993524
• Report Number(s): UCRL-JC-104826; CONF-9009348--1; ON: DE91008456
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
COMPUTER CODES
COMPUTERIZED SIMULATION
D CODES
DEFORMATION
FINITE ELEMENT METHOD
MATHEMATICAL LOGIC
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
PLASTICITY
SHEAR
SHELLS
SIMULATION
STRAINS
THREE-DIMENSIONAL CALCULATIONS