نتایج جستجو برای: 3d crack
تعداد نتایج: 212422 فیلتر نتایج به سال:
Griffith's energetic criterion, or `energy balance', has for a century formed the basis fracture mechanics; energy flowing into crack front is precisely balanced by dissipation (fracture energy) at front. If structure not properly accounted for, balance will either appear to fail lead unrealistic results. Here, we study influence of secondary low-speed propagation in hydrogels under tensile loa...
modelling of crack propagation by finite element method under mixed mode conditions is of prime importance in fracture mechanics. this paper describes an application of finite element method to the analysis of mixed mode crack growth in linear elastic fracture mechanics. crack growth process is simulated by an incremental crack-extension analysis based on the maximum principal stress criterion,...
Uptake of Community-Based Peer Administered HIV Point-of-Care Testing: Findings from the PROUD Study
OBJECTIVES HIV prevalence among people who inject drugs (PWID) in Ottawa is estimated at about 10%. The successful integration of peers into outreach efforts and wider access to HIV point-of-care testing (POCT) create opportunities to explore the role of peers in providing HIV testing. The PROUD study, in partnership with Ottawa Public Health (OPH), sought to develop a model for community-based...
OBJECTIVE To examine relationships between parenting behaviors, parent-child relationship, and moderating effects of age on youth substance use among a community sample of African-American mothers who use crack cocaine and their children (12-17 years). METHODS Maternal-child dyads (n = 208) were recruited through street outreach and snowball sampling and completed interviews about substance u...
Boundary element method (BEM) is a powerful computational tool for analysing piezoelectric problems. The BEM has been so well developed during the past 40 years that it has been considered as a very popular computational tool. This method consists of formulating the engineering problem in terms of an integral equations relating only boundary values and determining its solutions numerically. Thu...
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