Results 161 to 170 of about 2,017 (215)

Effect of Stiffness Degradation on Earthquake Ductility Requirements

, 1966
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Constitutive relation and stiffness degradation of cracked anisotropic composite laminates(II) —determination of resolved stiffness and investigation of stiffness degradation for cracked laminates

Applied Mathematics and Mechanics (English Edition), 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Xingguo, Hua, Yu, Li, Zhengneng
exaly   +2 more sources

Stochastic dynamics with fatigue-induced stiffness degradation

Probabilistic Engineering Mechanics, 2000
This article deals with stochastic dynamics coupled with simultaneous evolution of degradation of the system properties. We provide a general formulations and interpretations of various response-degradation problems associated with randomly vibrating systems and then an efficient analysis of vibratory systems with fatigue-induced stiffness degradation ...
K Sobczyk
exaly   +2 more sources

Identification of stiffness degradation in structures using wavelet analysis

Construction and Building Materials, 2005
Abstract An approach for structural health monitoring (SHM) and damage detection using a wavelet based time-frequency technique is presented here. The characteristics of dynamic responses of structures are studied by wavelet analysis. Inferences are drawn from the wavelet coefficients obtained.
Biswajit Basu
exaly   +2 more sources

Redox-Responsive Hydrogels with Decoupled Initial Stiffness and Degradation

Biomacromolecules, 2021
Disulfide-cross-linked hydrogels have been widely used for biological applications because of their degradability in response to redox stimuli. However, degradability often depends on polymer concentration, which also influences the hydrogel mechanical properties such as the initial stiffness.
Charng-Yu Lin, Carly M. Battistoni, Julie C. Liu   +2 more
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A stiffness degradation model for graphite/epoxy laminates

29th Structures, Structural Dynamics and Materials Conference, 1988
Stiffness reduction in composite laminates is an important measure of fa tigue damage. The determination of fatigue damage and the prediction of fatigue life can be made through the development of a stiffness degradation model. This paper proposes a stiffness degradation model that can be used to predict the statistical distribution of the residual ...
J.N. Yang, D.L. Jones, S.H. Yang, A. Meskini   +3 more
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Cyclic Stiffness Degradation in Nonlinear Jackup Dynamics

Proceedings of Offshore Technology Conference, 2009
Abstract SNAME (2002) Guidelines for Site Specific Assessment of Mobile Jack-Up Units gives equations to describe degradation of foundation stiffness for jackup spudcans, depending on the size of a load cycle within a yield envelope.
E.T.R.. T.R. Dean, R.. Metters
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Models for RC Frames with Degrading Stiffness

Journal of the Structural Division, 1977
Analytical models for representing the hysteretic behavior of reinforced concrete members are reviewed. Based on results of exterior connection tests, two degrading trilinear models are suggested, one of which considers the effect of the connection.
James C. Anderson, William H. Townsend
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Topology optimization of degradable composite structures with time‐changeable stiffness

International Journal for Numerical Methods in Engineering, 2021
AbstractFor effective bone healing, the stiffness of the bone plate should be adjusted to different bone‐healing processes. Thus, the design of stiffness‐changeable structures that take into account the time effect is of importance. To this end, this study introduces a novel topological optimization approach for the composite structural layout design ...
Heng Zhang, Akihiro Takezawa, Xiaohong Ding, Shipeng Xu, Hao Li, Honghu Guo   +5 more
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Extracellular matrix (ECM) stiffness and degradation as cancer drivers

Journal of Cellular Biochemistry, 2018
AbstractAlteration in the density and composition of extracellular matrix (ECM) occurs in tumors. The alterations toward both stiffness and degradation are contributed to tumor growth and progression. Cancer‐associated fibroblasts (CAFs) are the main contributors to ECM stiffness and degradation.
Masoud Najafi, Bagher Farhood, Keywan Mortezaee   +2 more
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