نتایج جستجو برای: cyclic softening

تعداد نتایج: 104059  

2017
Chungseok Kim

Strain-induced phase transformation and damage accumulation in austenitic stainless steel subjected to cyclic loading were investigated by nondestructive evaluation. The cyclic loading test was performed at various strain amplitudes at the same strain rate. The volume fraction of the strain-induced phase transformation (α′-martensite) was determined by ferrite scope and magnetic coercivity meas...

Journal: :Journal of Geotechnical and Geoenvironmental Engineering 2008

2002
K. Willam

Concrete is a material whose performance is governed by the subtle interaction of its cohesive and frictional constituents. Since the theories of plasticity, damage mechanics, and fracture mechanics cannot, by themselves, capture both of these phenomena, a novel constitutive model is proposed which combines the theories of plasticity and damage mechanics in a multi-surface formulation. Synthesi...

This paper proposes a framework for the constitutive model based on the semi-micromechanical aspects of plasticity, including damage progress for simulating behavior of concrete under multiaxial loading. This model is aimed to be used in plastic and fracture analysis of both regular and reinforced concrete structures, for the framework of sample plane crack approach. This model uses multilamina...

Journal: :International Journal for Numerical Methods in Engineering 2023

In this study, a new traction-separation based constitutive model for use in finite element simulation of masonry joints under complex loading conditions is developed cohesive elements. The proposed formulated using damage parameters and plastic deformation with mutual couplings, can accurately simulate the nonlinear behaviors considering hardening or softening strength stiffness degradation. T...

Behnam Saadati , Saeid Sabouri-Ghomi,

Configuration and geometry of bracing systems affect the seismic performance of structures significantly. Recently, the current authors have introduced a new configuration for eccentric bracing of structural frames that may be assumed as the combination of inverted Y-type and rotated K-type EBFs. The resulted braced frame is called EBF-DVL, consisting of two vertical links attached together by ...

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