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Aerospace University, Shenyang 110136, China Received 1 August 2017; accepted 8 February 2018 Abstract: A finite element model based on solid mechanics was developed with ABAQUS to study the material... and quantitative understanding for the FSW process. 2 Model description The commercial finite element software ABAQUS is used to model the whole FSW process. The present model is composed of a deformable......
汽车内后视镜支架有限元模型的分析与评价徐明,方瑞华摘 要:汽车内后视镜支架性能是影响汽车后视野稳定性的重要因素,基于Abaqus对后视镜支架进行分析计算,得出其改进方案,并首次提出汽车后视镜支架有限元模型分析的评价方法.关键词:后视镜;有限元分析;悬臂梁;评价方法;......
文章编号:1004-0609(2013)S1-s0718-04 Ti-43Al-9V-Y合金包套热轧热力耦合有限元模拟 孔凡涛,崔 宁,陈玉勇,訾凌君 (哈尔滨工业大学 金属精密热加工国家级重点实验室,哈尔滨 150001) 摘 要:采用ABAQUS有限元模拟软件对Ti-43Al-9V-Y合金的轧制过程进行模拟,建立三维热力耦合有限元模型,分析轧制状态下包套和合金的温度场...-jun (National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China) Abstract: The hot rolling of Ti-43Al-9V-Y alloy was simulated by ABAQUS finite......
处螺栓联接三维模型并运用Hypermesh软件处理,在ABAQUS中建立螺栓接触模型,取预紧力为屈服极限σp0.2的60%~80%对螺栓联接偏航过程静力学性能进行分析.研究结果表明:通过对比不同预紧力工况下得出的应力强度与疲劳强度,提出可供参考的预紧力Fv取值范围；当且预紧力为0.7σp0.2时,螺栓及其连接件应力应变最理想,在仅受预紧力和加载极限载荷后最大应力分别为712.5 MPa和733.4... model of bolts was built in ABAQUS and the statics performance was analyzed in yawing process by taking 60%-80% of yield limit as preload. The results show that through comparing the stress......
independent factors on the hardening parameters. These models were introduced into finite-element code "Abaqus" to simulate tensile tests of welded joints. The relative average deviation criterion, between... with the Swift hardening law (Eq. (1)). These computed responses were deduced from the numerical simulations using the finite element code Abaqus/Implicit, in which the introduced elastoplastic behavior......
钢筋混凝土双向板耐火性能研究 唐贵和1, 2,黄金林1 (1. 华南农业大学 水利与土木工程学院,广东 广州,510642； 2. 华南理工大学 土木交通学院,广东 广州,510640) 摘要:利用有限元软件ABAQUS对高温下钢筋混凝土双向板三维瞬态温度场和三维力学性能进行非线性分析,数值模拟结果与文献结果吻合较好.在此基础上,分析影响钢筋混凝土双向板耐火性能的主要参数,包括跨高比,保护层,荷... by using the finite element program ABAQUS. Numerical results agree well with the experimental results provided by previous researchers. Based on the analysis, the primary parameters, such as span–depth......
兆瓦级风力机偏航齿圈高强度联接螺栓螺纹表面裂纹扩展分析 李秀珍1, 2,邓华1,吕杏梅2,李中林2,李润旭2 (1. 中南大学 机电工程学院,湖南 长沙,410083； 2. 南车株洲电力机车研究所有限公司 风电事业部,湖南 株洲,412001) 摘要:建立兆瓦级风力机偏航齿圈与塔架法兰处高强度联接螺栓联接三维模型并在Hypermesh前处理,在ABAQUS建立高强度联接螺栓接触模型,按照不同裂...-strength connecting bolts was built in ABAQUS. The simulation analysis of surface crack growth at both the bottom and top thread of high-strength connecting bolts was achieved according to different......
杂截面零件固体颗粒介质成形过程进行研究.结合镁合金热态单向拉伸试验和有限元逆向法,确定预测热态下镁合金成形极限的Gurson-Tvergaard-Needleman(GTN)模型损伤参数.以镁合金异形件为研究对象,基于镁合金GTN损伤模型,采用有限元软件ABAQUS模拟该异形件的成形过程,分析不同工艺参数对工件壁厚和孔洞体积分数的影响,确定了该异形件的最佳成形工艺参数.设计了镁合金异形件固体颗粒介...[7]通过将改进的GTN损伤模型带入ABAQUS子程序中,对不同温度下镁合金冲压成形做了研究,展开成形试验,并用电子显微镜观察了材料损伤演化过程. 镁合金结构材料具有低密度,高比强度和无污染等优点,在汽车和航空航天等领域有着广泛的应用.但因其结构特点,室温下镁合金的极限拉深比很低[8].国内外许多学者通过改变温度条件或成形工艺,来提高镁合金板料的成形性能[9].张士宏等[10]通过电子背散射衍射......
:基于GTN损伤模型,采用实验与有限元仿真相结合的方式对高强度7075-T6铝合金在温成形HFQ工艺过程中的损伤演化进行研究.通过扫描电镜观测得铝合金板材在变形中的损伤演化符合孔洞长大,形核,聚合和最终断裂的规律；采用中心复合试验设计法构造拉伸曲线关键变量关于GTN损伤参数的响应曲面模型,进而结合遗传算法确定铝合金板材的损伤参数；通过有限元软件ABAQUS仿真预测不同温度下铝合金方盒拉深过程中的损伤...一变量对板材成形性能的影响,仿真过程中板料温度保持恒定并采用4边形壳单元进行网格划分；模具同样采用壳单元划分并定义为耦合刚体.采用ABAQUS动力显式求解器进行仿真分析,其中损伤参数和材料属性分别来自上文的识别方法和拉伸实验,有限元模型及尺寸如图8所示. 表2 中心复合实验设计(CCD)方案及响应值 Table 2 Central composite......
在长期受荷时的累积侧向变形问题,基于室内循环三轴试验,建立考虑孔压累积的软黏土刚度衰减模型.通过对ABAQUS进行二次开发,在有限元分析程序中建立刚度衰减模型,并引入门槛循环应力比对不同应力水平的土体分区计算.研究结果表明:在刚度衰减模型中采用门槛循环应力比作为是否考虑孔压累积的标准更符合真实情况；当循环荷载较小时,桩身泥面位移在一定循环次数后趋于稳定；当荷载幅值超过一定值后,桩身泥面位移迅速发展... by ABAQUS. And the threshold cyclic stress ratio was introduced to calculate soil by divided areas under different stresses. The results show that the application of threshold cyclic stress ratio......
