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Modeling strain softening in spatial frames using velocity-based formulation [Elektronski vir] = Modeliranje mehcanja materiala v prostorskih okvirjih z ˇ uporabo formulacije, osnovane na hitrostihKusuma Chandrashekhara, Sudhanva ; Zupan, Dejan, mehanikModelling complex mechanical behaviour of structures is usually reflected in sensitive behaviour of numerical solution methods and represents a significant challenge for numerical modelling. In the ... present work, we address the problem of strain softening which is often observed in porous heterogeneous materials in combination with non-linear response of spatial frames. In our analysis we will focus on beam-like structural elements with proper consideration of non-linear geometry and material non-linearity including the softening regime. The proposed approach is based on velocity-based beam formulation with energy preservation. The computational advantages of the formulation are preserved after the efficient detection of cross-sectional singularity and post-critical treatment of localized strains are implemented into the formulation. The efficiency, accuracy, and robustness of the proposed method are demonstrated by numerical example.Source: Kuhljevi dnevi 2022 [Elektronski vir] : zbornik del : Portorož, 22.-23. september 2022 (Str. 34-41)Type of material - conference contribution ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 161204739
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Kusuma Chandrashekhara, Sudhanva | 56828 |
Zupan, Dejan, mehanik | 19121 |
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