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RISA Probabilistic Crack Band Model for Quasibrittle Fracture
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new crack band model (CBM) for probabilistic analysis of quasibrittle fracture. The model is anchored by a probabilistic treatment of damage initiation, localization, and propagation. This model ...
Internal Length Scale of Weakest-Link Statistical Model for Quasi-Brittle Fracture
Publisher: American Society of Civil Engineers
Abstract: Anchored by the theory of extreme value statistics, Weibull distribution is the most widely used mathematical model for strength distribution of brittle structures. In a series of recent studies, a finite weakest-link model ...
Stochastic Buckling of Geometrically Imperfect Beams on Elastic Foundation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Geometrical imperfections are ubiquitous in loadbearing structures, including beams, columns, and shells. Fabrication processes of structural members most often create geometrical imperfections of random size and shape, ...
A Renewal Weakest-Link Model of Strength Distribution of Polycrystalline Silicon MEMS Structures
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Experimental data have made it abundantly clear that the strength of polycrystalline silicon (poly-Si) microelectromechanical systems (MEMS) structures exhibits significant variability, which arises from the random ...
Application of J-Integral to a Random Elastic Medium
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates the use of the J-integral to compute the statistics of the energy release rate of a random elastic medium. The spatial variability of the elastic modulus is modeled as a homogeneous lognormal random ...
Stochastic Buckling of Geometrically Imperfect Beams on Elastic Foundation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Geometrical imperfections are ubiquitous in load-bearing structures, including beams, columns, and shells. Fabrication processes of structural members most often create geometrical imperfections of random size and shape, ...
Scaling of Strength of Metal Composite Joints—Part III: Numerical Simulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The size effect in the failure of a hybrid adhesive joint of a metal with a fiberpolymer composite, which has been experimentally demonstrated and analytically formulated in preceding two papers, is here investigated ...
A Numerical Study on the Buckling of Near-Perfect Spherical Shells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present the results from a numerical investigation using the finite element method to study the buckling strength of near-perfect spherical shells containing a single, localized, Gaussian-dimple defect whose profile is ...
Rate-Dependent Scaling of Dynamic Tensile Strength of Quasibrittle Structures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the effect of strain rate on the scaling behavior of dynamic tensile strength of quasibrittle structures. The theoretical framework is anchored by a rate-dependent finite weakest link model. The ...
Mechanism-Based Energy Regularization in Computational Modeling of Quasibrittle Fracture
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Quasibrittle materials are featured by a strain-softening constitutive behavior under many loading scenarios, which could eventually lead to localization instability. It has long been known that strain localization would ...