Accession Number : ADA149842


Title :   A Solution Method for Large Deformation Contact Problems.


Descriptive Note : Contract rept. Aug 82-Aug 83,


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Bathe,K J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a149842.pdf


Report Date : Oct 1984


Pagination or Media Count : 70


Abstract : A solution procedure for the analysis of planar and axisymmetric contact problems involving sticking, frictional sliding and separation under large deformations is presented. The contact conditions are imposed using the total potential of the contact forces with the geometric compatibility conditions, which leads to contact system matrices and force vectors. Some key aspects of the procedure are the gradient matrix corresponding to sliding, the use of distributed tractions on the contact segments for deciding whether a node is sticking, sliding, or releasing and the evaluation of the nodal point contact forces. The solutions to various sample problems are presented to demonstrate the applicability of the algorithm.


Descriptors :   *STRUCTURAL ANALYSIS , *DEFORMATION , *SLIDING CONTACTS , COMPUTER PROGRAMS , ALGORITHMS , EQUATIONS OF MOTION , TWO DIMENSIONAL , FINITE ELEMENT ANALYSIS , EQUILIBRIUM(GENERAL) , NONLINEAR DIFFERENTIAL EQUATIONS , AXISYMMETRIC , SEPARATION , ITERATIONS , SLIDING FRICTION


Subject Categories : Structural Engineering and Building Technology
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE