Contact dynamics as a nonsmooth discrete element method
نویسندگان
چکیده
منابع مشابه
Finite element analysis of nonsmooth contact
This work develops robust contact algorithms capable of dealing with complex contact situations involving several bodies with corners. Amongst the mathematical tools we bring to bear on the problem is nonsmooth analysis, following [14]. We speci cally address contact geometries for which both the use of normals and gap functions have difculties and therefore precludes the application of most co...
متن کاملA contact dynamics approach to the Granular Element Method
We present a contact dynamics (CD) approach to the Granular Element Method (GEM) Andrade et al. (2012) [1], abbreviated here as CD–GEM. By combining particle shape flexibility through Non-Uniform Rational Basis Splines, properties of implicit time-integration discretization (e.g., larger time steps) and non-penetrating constraints, as well as a reduction to a static formulation in the limit of ...
متن کاملDiscrete Element Simulation and the Contact Problem
This paper addresses the problem of contact detection in discrete element multibody dynamic simulations. This paper presents an overview of the problem and a detail description of a new object representation scheme called the discrete function representation (DFR). This representation is designed to reduce the computational cost of both contact detection and the more diicult problem of contact ...
متن کاملTowards an augmented domain decomposition method for nonsmooth contact dynamics models
This paper explores the numerical performances of algorithms enriched by an augmented interface problem in a domain decomposition method dedicated to nonsmooth dynamic systems. Starting from simulations on a single time step, different algorithms are tested on moderate size samples. The analysis of the results leads to an incomplete resolution strategy for solving a time-evolution problem. This...
متن کاملA new discrete element analysis method for predicting hip joint contact stresses.
Quantifying cartilage contact stress is paramount to understanding hip osteoarthritis. Discrete element analysis (DEA) is a computationally efficient method to estimate cartilage contact stresses. Previous applications of DEA have underestimated cartilage stresses and yielded unrealistic contact patterns because they assumed constant cartilage thickness and/or concentric joint geometry. The stu...
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: Mechanics of Materials
سال: 2009
ISSN: 0167-6636
DOI: 10.1016/j.mechmat.2009.01.028