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Finite deformation analysis of the rotating cylindrical hollow disk composed of functionally-graded incompressible hyper-elastic material

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Applied Mathematics and Mechanics(English Edition) 2023年第8期44卷 1367-1384页

作者： libiao xin Yang WANG Zhiqiang LI Y.B.LI College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan 030024China College of Aeronautics and Astronautics Taiyuan University of TechnologyTaiyuan 030024China Department of Mechanical and Aerospace Engineering North Carolina State UniversityRaleighNC 27606U.S.A.

The deformations and stresses of a rotating cylindrical hollow disk made of incompressible functionally-graded hyper-elastic material are theoretically analyzed based on the finite elasticity *** hyper-elastic material is described by a new micro-macro transition ***,the material shear modulus and density are assumed to be a function with a power law form through the radial direction,while the material inhomogeneity is thus reflected on the power index *** integral forms of the stretches and stress components are *** the obtained complicated integral forms,the composite trapezoidal rule is utilized to derive the analytical solutions,and the explicit solutions for both the stretches and the stress components are numerically *** comparing the results with two classic models,the superiority of the model in our work is ***,the distributions of the stretches and normalized stress components are discussed in detail under the effects of *** results indicate that the material inhomogeneity and the rotating angular velocity have significant effects on the distributions of the normalized radial and hoop stress components and the *** believe that by appropriately choosing the material inhomogeneity and configuration parameters,the functionally-graded material(FGM)hyper-elastic hollow cylindrical disk can be designed to meet some unique requirements in the application fields,e.g.,soft robotics,medical devices,and conventional aerospace and mechanical industries.

关键词： functionally-graded material(FGM) incompressible hyper-elastic model rotating hollow cylindrical disk

Revisiting the elastic solution for an inner-pressured functionally graded thick-walled tube within a uniform magnetic field

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Applied Mathematics and Mechanics(English Edition) 2018年第10期39卷 1485-1498页

作者： libiao xin Yanbin LI Dongmei PAN Guansuo DUI Chengjian JU Shanxi Key Laboratory of Material Strength & Structural Impact College of MechanicsTaiyuan University of Technology National Demonstration Center for Experimental Mechanics Education College of Mechanics Taiyuan University of Technology Applied Mechanics of Materials Laboratory Department of Mechanical EngineeringTemple University Department of Civil and Environmental Engineering University of Houston Institute of Mechanics Beijing Jiaotong University

In this paper, the mechanical responses of a thick-walled functionally graded hollow cylinder subject to a uniform magnetic field and inner-pressurized loads are studied. Rather than directly assume the material constants as some specific function forms displayed in pre-studies, we firstly give the volume fractions of different constituents of the functionally graded material(FGM) cylinder and then determine the expressions of the material constants. With the use of the Voigt method, the corresponding analytical solutions of displacements in the radial direction, the strain and stress components, and the perturbation magnetic field vector are derived. In the numerical part, the effects of the volume fraction on the displacement, strain and stress components, and the magnetic perturbation field vector are investigated. Moreover, by some appropriate choices of the material constants, we find that the obtained results in this paper can reduce to some special cases given in the previous studies.

关键词： functionally graded material(FGM) thick-walled tube elasticity solution magnetic field perturbation of magnetic field vector

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离岸流灾害水动力学过程的数值模拟研究

海洋学报 2021年第12期43卷 92-101页

作者：田海平陈雷王维辛立彪太原理工大学力学国家级实验教学示范中心山西太原030024 西北工业大学力学与土木建筑学院陕西西安710129

离岸流是近岸流的重要组成部分,当波浪受到特殊海滩地形的影响,会形成一股沿着离岸方向运动的高速水流,能够迅速将人带离海岸,对海滨安全造成威胁。为了深入探究离岸流的形成机理及水动力学特性,本文基于二阶Stokes波浪理论,采用了更为... 详细信息

离岸流是近岸流的重要组成部分,当波浪受到特殊海滩地形的影响,会形成一股沿着离岸方向运动的高速水流,能够迅速将人带离海岸,对海滨安全造成威胁。为了深入探究离岸流的形成机理及水动力学特性,本文基于二阶Stokes波浪理论,采用了更为光滑的变截面沙坝模型,通过流体体积法捕捉自由液面,对离岸流进行三维数值模拟探究。本文重点分析了离岸流产生时流场的瞬时速度、时均速度、压强等不同参量的分布规律,结果显示在沙坝和海岸线之间,有一对方向相反的水循环体系;对比不同流层离岸流的速度,了解到波浪与离岸流的耦合作用;并探究了入射波波高对离岸流强度及分布区域的影响,深化了对离岸流水动力学过程的认识。

关键词：离岸流数值模拟二阶Stokes波三维流场沙坝海滩

高效机械排挡系统在新能源汽车中的应用与优化探索

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中国高新科技 2024年第12期 93-95页

作者：张立彪任超男河南物流职业学院河南新乡453000

为了提升驾驶体验,进行高效机械排挡系统在新能源汽车中的应用与优化探索。通过对机械排挡系统的结构和材料进行优化设计,实现车辆的轻量化,提高车辆的性能和经济性。引入智能化控制系统实现车辆与机械排挡系统的智能互联,根据车辆行驶... 详细信息

为了提升驾驶体验,进行高效机械排挡系统在新能源汽车中的应用与优化探索。通过对机械排挡系统的结构和材料进行优化设计,实现车辆的轻量化,提高车辆的性能和经济性。引入智能化控制系统实现车辆与机械排挡系统的智能互联,根据车辆行驶状态快速、准确地换挡,提高驾驶舒适度和车辆的行驶效率。控制噪声和振动,以提供更舒适的驾驶体验。实验结果表明,高效机械排挡系统可以平稳地实现新能源汽车中高低挡的转换,具有应用价值。

关键词：高效机械排挡系统新能源汽车汽车轻量化噪声控制挡位调节

Measurement of Robot Wrist Forces Based on MLF Network

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Measurement of Robot Wrist Forces Based on MLF Network

骨伤复原汤对四肢骨折延迟愈合患者微循环和炎性反应的影响

ICEMI'2005第七届国际电子测量与仪器学术会议

作者： Tong libiao 1 Mei Tao 2 Xu Kejun 3 Lu Wenjun 1 Hong xin 1 (1 New Star Research Institute of Applied Technology Hefei 230031 China) (2 Institute of Intelligent Machines Chinese Academy of Sciences Hefei 230031 China) (3 Institute of Automation Hefei University of Technology Hefei 230031 China)

Quantitative analysis of wrist forces for robot grippers is an important issue for robot control and operation safety. An approach is proposed to deduce the wrist forces from distributed force sensors

关键词： Sensor fusion wrist force robot gripper MLF neural network.

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临床医学工程 2022年第2期29卷 161-162页

作者：孔德伟明立彪武俊旗高鑫河南省滑县正骨医院骨伤科河南安阳456400

目的探讨骨伤复原汤对四肢骨折延迟愈合患者微循环和炎性反应的影响。方法56例四肢骨折延迟愈合患者随机分为两组,对照组给予复方骨肽注射液治疗,观察组在对照组基础上给予骨伤复原汤治疗,比较两组的治疗效果。结果治疗后,观察组的TNF-... 详细信息

目的探讨骨伤复原汤对四肢骨折延迟愈合患者微循环和炎性反应的影响。方法56例四肢骨折延迟愈合患者随机分为两组,对照组给予复方骨肽注射液治疗,观察组在对照组基础上给予骨伤复原汤治疗,比较两组的治疗效果。结果治疗后,观察组的TNF-α、IL-1β、IL-6均显著低于对照组,红细胞聚集指数、电泳指数、变形指数、刚性指数显著低于对照组(P<0.05)。结论骨伤复原汤有利于抑制四肢骨折延迟愈合患者的炎性反应,改善血液微循环,促进骨愈合,且安全性高。

关键词：四肢骨折延迟愈合骨伤复原汤微循环炎性反应

[足母]长屈肌转位联合腓肠肌腱条翻转桥接修复陈旧跟腱断裂的临床体会

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足踝外科电子杂志 2023年第1期10卷 33-36,50页

作者：张兆飞武俊旗孔德伟马重兴栗贡策高鑫明立彪河南省滑县正骨医院河南安阳456463

目的探讨应用[足母]长屈肌转位联合腓肠肌腱条翻转桥接修复陈旧跟腱断裂的临床疗效及手术方法。方法2016年1月至2022年12月,河南省滑县正骨医院应用[足母]长屈肌转位重建跟骨止点联合腓肠肌腱条翻转桥接跟腱修复陈旧跟腱断裂患者12例,... 详细信息

目的探讨应用[足母]长屈肌转位联合腓肠肌腱条翻转桥接修复陈旧跟腱断裂的临床疗效及手术方法。方法2016年1月至2022年12月,河南省滑县正骨医院应用[足母]长屈肌转位重建跟骨止点联合腓肠肌腱条翻转桥接跟腱修复陈旧跟腱断裂患者12例,跟腱断裂时间最短1个月,最长5年以上,男9例,女3例,年龄42~68岁,平均年龄54.3岁,跟腱缺损长度为5~8 cm,分别在术后3周、6周、8周、3个月、6个月、12个月随访,随访期间,早期调整石膏,后期指导功能锻炼。结果本组12例陈旧跟腱断裂患者的患足重新获得提踵功能,恢复了正常行走及工作,疼痛及跛行症状消失,无跟腱再断裂。其中1例切口愈合不良,通过正常换药联合电磁波治疗仪照射后愈合,无感染,该例患者BMI偏高。另外,12例病例均获得切口I期愈合。术后,12例患者最长随访时间超过2年,切口瘢痕无异常增生,无瘢痕皮肤磨损破溃,患肢腓肠肌萎缩恢复,小腿围周长与健侧接近,患足可提踵,提踵力量略弱于健足,可满足正常行走及劳作,恢复一定跑跳能力,美国足踝外科协会(American Orthopedic Foot and Ankle Society,AOFAS)踝-后足评分及跟腱完全断裂评分(achilles tendon total rupture score,ATRS)均在90分以上。结论使用[足母]长屈肌转位重建跟骨止点联合腓肠肌腱条翻转桥接断裂跟腱的临床效果良好,提踵力量强,牢固程度高,减少切口缝合张力,并发症少,可相对较早进行负重锻炼,有效改善跛行不适,是一种修复陈旧跟腱断裂的可靠方法。

关键词：跟腱断裂陈旧损伤 [足母]长屈肌转位腓肠肌腱条翻转桥接修复