1 AIT Asian Institute of Technology

A new nonlinear shell finite element based on pseudo Lagrangian formulation

AuthorTsujimoto, Jun
Call NumberAIT Thesis no.ST-86-26
Subject(s)Shells (Engineering)--Mathematical models
NoteA thesis study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractA new variation of Lagrangian formulation , called "pseudo" Lugrangian formulation is presented in this study for nonlinear analysis of degenerated shell element. In this formulation, the pseudo strain, stress, constitutive tensors and boundary condition of each element are defined in the "pseudo " reference mode , by employing a "non physical " parental clement as the reference configuration for each element in the real body. Therefore , the governing equation can be derived with respect to the "pseudo" reference con figuration. Several examples of small and finite deformation problems of linear elastic shells indicate that the bi linear de9enerated shell element baaed on the pseudo Lagrangian formulation is not only an alternative but is more competitive a nd has a n advantage in eliminating the spurious hourglass mode found in the conventional Lagrangian formulation.
Year1986
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSStructural Engineering (STE) /Former Name = Structural Engineering and Construction (ST)
Chairperson(s)Worsak Kanok-Nukulchai
Examination Committee(s)Karasudhi, Pisidhi ;Przybylo, Waclaw, D. Sc.
Scholarship Donor(s)Nippon Steel Corp.
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1986


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