Structural Design Optimization of Dynamic Crack Propagation Problems Using Peridynamics
نویسندگان
چکیده
منابع مشابه
Design Optimization of Structural Acoustic Problems Using Fem-bem
A design optimization procedure of a noise-vibrationharshness (NVH) problem of a complicated vehicle structure is presented by assuming the acoustic pressure does not affect the structural vibration. The steady-state dynamic behavior of the vehicle is calculated from the frequency response finite element analysis, while the sound pressure level within the acoustic cavity is calculated from the ...
متن کاملPoint-based Dynamic Deformation and Crack Propagation
In this paper, we articulate a novel meshless computational paradigm for the effective modeling, accurate physical simulation, and rapid visualization of solid objects. The uniqueness of our approach is that both the interior and the boundary of our new volumetric representation are point-based, generalizing the powerful and popular method of point-sampled surfaces. We also build the point-base...
متن کاملModelling of Crack Growth Using a New Fracture Criteria Based Peridynamics
Peridynamics (PD) is a nonlocal continuum theory based on integro-differential equations without spatial derivatives. The elongation fracture criterion is implicitly incorporated in the PD theory, and fracture is a natural outcome of the simulation. On the other hand, a new fracture criterion based on the crack opening displacement combined with peridynamic (PD-COD) is proposed. When the relati...
متن کاملMemory Design for Constrained Dynamic Optimization Problems
A proposal for a memory design is given that is suitable for solving constrained dynamic optimization problems by an evolutionary algorithm. Based on ideas from abstract memory, two schemes, blending and censoring, are introduced and tested. Using a new benchmark we show in numerical experiments that such a memory can improve solving certain types of constrained dynamic problems.
متن کاملImplementation of a crack propagation constraint within a structural optimization software
A crack propagation constraint related to the stress intensity factor is examined for the minimumweight design optimization of a composite blade-stiffened panel. A low-fidelity approach uses a closed-form solution for the stress intensity factor, while a high-fidelity approach uses the stress distribution around the crack. Structural optimizations are performed by lowand highfidelity approaches...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Computational Structural Engineering Institute of Korea
سال: 2015
ISSN: 1229-3059,2287-2302
DOI: 10.7734/coseik.2015.28.4.425