Finite element response sensitivity analysis using force-based frame models
نویسندگان
چکیده
منابع مشابه
Finite element response sensitivity analysis using force-based frame models
This paper presents a method to compute consistent response sensitivities of force-based finite element models of structural frame systems to both material constitutive and discrete loading parameters. It has been shown that force-based frame elements are superior to classical displacement-based elements in the sense that they enable, at no significant additional costs, a drastic reduction in t...
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The direct differentiation method (DDM) has been shown to be an accurate and efficient approach to computing the sensitivity of structural response to uncertain parameters of constitutive models and finite-element formulations. Although it is well-known that the DDM should be consistent with the numerical time stepping procedure at the structural level, it is possible for element-level numerica...
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Michele Barbato, A.M.ASCE; and Joel P. Conte, M.ASCE Assistant Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ. and A&M College, 3418H Patrick F. Taylor Hall, Nicholson Extension, Baton Rouge, LA 70803. E-mail: mbarbato@lsu. edu Professor, Dept. of Structural Engineering, Univ. of California at San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0085 (corresponding auth...
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To expand the scope of accurate and efficient gradient-based applications in structural engineering, the direct differentiationmethod (DDM) is applied to compute the response sensitivity of force-based frame finite elements with combined material and geometric nonlinearity where the transverse displacement field is determined by curvature-based displacement interpolation. Sensitivity is develop...
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A technique of idealising frame models using substructures is outlined. All joints are modelled in 3D but, using substructures, each 3D joint is converted to an equivalent stiffness element. The slender regions between the joints are modelled using beam elements. Coupling between the substructures and beam elements is carried out in a manner that conforms with the theory of elasticity. Post-ela...
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ژورنال
عنوان ژورنال: International Journal for Numerical Methods in Engineering
سال: 2004
ISSN: 0029-5981
DOI: 10.1002/nme.994