Results 51 to 60 of about 18,386 (242)
Pro/Engineer与ANSYS进行零件有限元分析的差异研究 The Difference between Pro/Engineer and ANSYS in FEA
, 2015 为了了解零部件应力的分布与变形情况，通过有限元分析技术可以仿真模拟零件在相应载荷和约束下所对应的变形，本文分别利用两种不同软件Pro/Engineer和ANSYS对零件进行静力学有限元分析，ANSYS采用有限元分析，不同的网格划分对结果影响很大，Pro/E则采用几何单元网格划分，所求应力比ANSYS所求应力略大，比较结果，分析原因以得出在确定条件下选取更优的方法求解零部件的应力分布与变形。 To get the stress distribution and deformation of ...
马粉粉, 崔亚辉, 王宏江
semanticscholar +1 more source
World Medical &Health Policy, Volume 16, Issue 2, Page 198-207, June 2024.Abstract The availability of hospital‐based dental services across Australia varies with a number of hospitals disestablishing dental departments due to rising costs. However, the perceived costs are difficult to quantify as funding models used to capture activity are not uniform across health facilities.
Pritam Daniel Sundaresan +3 more
wiley +1 more source
Theoretical Analysis and Numerical Investigation for Discontinuous Spectral Element Methods of Fractional Differential Equations [PDF]
, 2015 分数阶微积分方程是整数阶微积分方程的扩展，是含有非整数阶导数的方程，具有深刻的物理背景和丰富的理论内涵，在物理、机械、化学、生物、环境科学、工程以及金融等多个学科领域具有广泛的应用。 本文考虑几类分数阶微分方程初边值问题的理论、算法设计和分析，提出求解相关问题的有效高精度算法，并进行了系统的理论分析和数值试验。论文主要内容包括以下四个部分： 第一部分，即第二章，研究分布意义下间断函数的分数阶导数及其相关性质。首先我们引进在分布意义下间断函数的分数阶导数，研究新定义下的分数阶导数与Riemann ...
哈里曼·达力汗
core
Automatic Grid Generation of CAD for Gear Reducer Housing
Jixie chuandong, 1994 本文针对齿轮减速机ＣＡＤ过程中箱体类复杂板块组合结构有限元强度分析的特点，提出了基于等参数变换法的三维有限元组合网格自动生成方法，其特点是可将大型复杂结构自动离散为不同单元组成的网格，且可避免过渡单元，特别适用于复杂板块组合结构的有限元分析。
程燕青
doaj
Wildlife mortality risk posed by high and low traffic roads
Conservation Biology, Volume 38, Issue 2, April 2024.Abstract Wildlife mortality due to collisions with vehicles (roadkill) is one of the predominant negative effects exerted by roads on many wildlife species. Reducing roadkill is therefore a major component of wildlife conservation. Roadkill is affected by various factors, including road attributes and traffic volume.
Dror Denneboom +2 more
wiley +1 more source
Identifying inconsistencies in exotic pet regulations that perpetuate trade in risky species
Conservation Biology, Volume 38, Issue 2, April 2024.Abstract Regulatory inconsistencies at different jurisdictional levels have contributed to the global expansion of the exotic pet trade, with resultant increases in the spread of invasive species and pathogens. Researchers have enumerated multiple limitations and environmental risks posed by international and national rules that govern the exotic pet ...
Elizabeth N. Pratt +3 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2012 通过引进间断Galerkin有限元方法的思路，给出了 一维和二维广义神经传导方程的间断Galerkin有限元解法，并对这种数值解法进行了相应的误差分析，得到其精度为O（Δt+hk+1）；通过对数值例子及其结果的分析，验证了数值计算方法的有效性.
ZHUHuan(朱欢), SUNFang-yu(孙方裕)
doaj +1 more source
The physical mechanism of beam formation in dolphin’s biosonar [PDF]
, 2016 作为群居的海洋哺乳动物，齿鲸类拥有着与众不同且功能强大的生物声呐系统。其生物声呐系统经过自然界的长期演化和优胜劣汰，性能已高度优化。海豚的回声定位声波能够在百米内探测到厘米级大小的物体，并对毫米级厚度的金属目标做出辨别，此外还能在探测移动目标的时候对其波束特性进行调整，其性能远远优于目前世界上任何的人工声呐。其生物声呐系统卓越的性能引起了世界上声学研究者强烈的兴趣，不但使得齿鲸类生物声呐研究成为近年来生物声学界以及国际海洋声学界的焦点，还成为新型海洋技术开发值得关注的高新科技领域 ...
魏翀
core
Nonlinear finite element analysis for seismic performance of high-strength concrete beam-column joints with new reinforcement details [PDF]
, 2006 Because the factors that affect the behavior of the beam-column joints are complicated, an experimental study alone is not sufficient. Therefore, a nonlinear finite element analysis was conducted to provide better understanding of the performance of the ...
Gan, L, Li, J, Pam, HJ
core
齿轮可靠度计算的概率有限元法（第Ⅱ部分:齿面接触疲劳强度的计算）
Jixie chuandong, 1993 本文将概率有限元法用于齿轮接触疲劳强度可靠度的计算。以功率、转速和疲劳极限为随机变量,在求解接触问题的有限元—线性规划法基础上,建立了相应的概率有限元基本方程及求解方法。该方法不仅可用于齿轮接触疲劳的可靠度计算,也可用于其他弹性体接触问题的可靠度计算。
吴立言, 刘更, 王步瀛
doaj