Results 31 to 40 of about 18,386 (242)

Radiological findings in the proximal sesamoid bones of yearling and 2‐year‐old Thoroughbred sales horses: Prevalence, progression and associations with racing performance

open access: yesEquine Veterinary Journal, Volume 57, Issue 1, Page 87-100, January 2025.
Abstract Background Radiological findings in the proximal sesamoid bones (sesamoids) are a persistent source of controversy at Thoroughbred sales, due to inconsistent classification and conflicting assignment of potential clinical importance. Objectives To define the prevalence of sesamoid findings on sales repository radiographs in yearling and 2‐year‐
Frances J. Peat   +5 more
wiley   +1 more source

国外期刊论文简介

open access: yesJianzhu Gangjiegou Jinzhan, 2010
<正>高层建筑连续性倒塌分析的三维有限元仿真Feng Fu(英国)采用通用有限元软件ABAQUS建立了一个20层建筑的三维有限元模型并对该建筑进行了连续性倒塌分析 ...
王卫永
doaj  

塔机螺栓连接有限元建模及动态载荷分析 Finite Element Modeling of Tower Bolt Connection and Dynamic Load Analysis

open access: yes, 2017
考虑螺纹升角建立螺栓联接的三维有限元模型,利用ABAQUS进行有限元分析,采用直接加载的方式施加预紧力,模拟螺纹联接副的承载力,并与Yamamoto解析法进行了对比验证。在此基础上施加横向动态载荷,研究了动态载荷作用下螺纹副不同的摩擦系数对应的螺纹承载力的变化情况。 Considering the thread Angle to establish the three-dimensional finite element model of bolt connection, using ABAQUS ...
张烨, 王胜春
semanticscholar   +1 more source

Evaluating use of two‐step International Ovarian Tumor Analysis strategy to classify adnexal masses identified in pregnancy: pilot study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 64, Issue 6, Page 808-817, December 2024.
ABSTRACT Objectives The primary aim was to validate the International Ovarian Tumor Analysis (IOTA) benign simple descriptors (BDs) followed by the Assessment of Different NEoplasias in the adneXa (ADNEX) model, if BDs cannot be applied, in a two‐step strategy to classify adnexal masses identified during pregnancy. The secondary aim was to describe the
J. Barcroft   +8 more
wiley   +1 more source

基于生态砖构建的新型河堤结构及位移分析 [PDF]

open access: yes, 2012
结合生态治理的要求,在分析国内外生态河堤的发展状况及相关的优缺点的基础上,提出了新型生态河堤,并通过ANSYS有限元软件对生态河堤的承载力及刚度进行有限元分析,对局部河堤结构进行了试验探究,并将有限元结果与试验结果进行对比,吻合情况较好。同时有限元结果也表明结构有较好的承载力、刚度、稳定性以及生态效果等 ...
李清曼, 武雷, 郝伟
core  

蒙皮支撑两连跨连续檩条模拟风吸力作用的试验研究

open access: yesJianzhu Gangjiegou Jinzhan, 2010
为了更深入了解金属蒙皮支撑连续檩条在整体蒙皮结构中所起的作用,为今后我国对连续檩条以及蒙皮结构的设计、计算提供依据,通过足尺模型试验和有限元模型的分析,研究了蒙皮支撑冷弯薄壁连续型钢檩条模拟风吸力作用的承载力。利用有限元程序ANSYS建立了带有非线性弹簧单元模拟自攻螺钉这一符合实际连接状况的有限元模型,与足尺试验模型的失稳模式、荷载-位移曲线、连接强度以及连接刚度的规律等相对比,验证了有限元模型的合理性、有效性及适用性。
潘宇   +6 more
doaj  

钢管壁哑铃形屈服线模式及承载力计算方法

open access: yesJianzhu Gangjiegou Jinzhan, 2022
基于组件法将钢梁-钢管柱螺纹锚固单边螺栓平齐端板连接简化为T形件-钢管模型,并利用参数化的有限元模型分析了T形件-钢管节点在单向拉伸荷载作用下钢管壁平面外受拉性能,发现了钢管柱壁新型的哑铃形屈服线模式。通过虚功原理,建立了钢管壁发生该屈服线模式的塑性极限承载力的计算方法。对不同参数的T形件-钢管节点钢管壁平面外受拉承载力进行了有限元分析,钢管柱壁塑性极限承载力的计算结果与有限元分析结果基本吻合。
刘闵   +6 more
doaj  

Strategies for advancing inclusive biodiversity research through equitable practices and collective responsibility

open access: yesConservation Biology, Volume 38, Issue 6, December 2024.
Abstract Biodiversity research is essential for addressing the global biodiversity crisis, necessitating diverse participation and perspectives of researchers from a wide range of backgrounds. However, conservation faces a significant inclusivity problem because local expertise from biodiversity‐rich but economically disadvantaged regions is often ...
Jose Valdez   +8 more
wiley   +1 more source

Research on Eddy Current Testing of Damages in Carbon Fiber Reinforced Polymers [PDF]

open access: yes, 2015
碳纤维增强树脂基复合材料因其优异的性能已被广泛应用于飞行器制造、汽车制造、化学工业、造船与电气设备等各个行业,尤其是在航空航天、船舰以及核能设备等领域受到高度重视。然而,复合材料结构件在制造和使用过程中不可避免的会因为冲击等原因产生各种类型的缺陷。此外,复合材料结构件在损坏之前几乎没有先兆,其破坏具有突然性,这一点往往造成严重的后果。因此对碳纤维增强树脂基复合材料损伤的无损检测研究具有极其重要的意义。 目前应用较多的检测碳纤维增强树脂基复合材料损伤的方法有红外检测、X射线检测以及超声检测等 ...
杜飞
core  

组合椭圆介质波导的高阶有限元分析

open access: yesGuangtongxin yanjiu, 1988
本文应用二次有限单元法分析计算了椭圆边界组合介质波导的色散特性,编制了相应的有限元程序,并与已有的结果作了比较。
蒲国胜, 廖承恩
doaj  

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