David Unger

Dr. David Unger

Professor Emeritus, Mechanical and Civil Engineering

Room 257, Koch Center for Engineering and Science
812-488-2899
du2@kanaryasevenler.net

Dr. Unger is the author of the textbook, Analytical Fracture Mechanics, 该书最初由学术出版社以精装版出版(1995年)。, 后来在2001年和2011年由多佛出版社以平装本的形式再版. 2005年，他被英国威廉希尔中文网站授予Sadelle and Sydney Berger学术活动奖, 2006年获工程及计算机科学学院院长教学奖, the Dean’s Research Award in 2022, and designated a UE Global Scholar in 2007. 他是一名有20年专业执照的工程师, and has served on the UE faculty for 21 years. In retirement, Dr. 昂格尔继续进行研究并发表技术论文.

Education

  • 伊利诺伊大学厄巴纳-香槟分校理论与应用力学博士.
  • 伊利诺伊大学厄巴纳-香槟分校航空与航天工程硕士.
  • BS Aerospace Engineering, St. Louis University.

Experience

  • Visiting Associate Professor, 机械工程与工程力学学系, Michigan Technological University.
  • 富兰克林大学机械工程技术项目代理主任
  • 俄亥俄州立大学工程力学助理教授.
  • Postdoctoral Researcher, Department of Chemical Engineering and Materials Science, University of Minnesota.

Specialty Areas

  • 非线性和环境辅助断裂力学
  • Solid Mechanics
  • Materials

Recent Publications

  • Unger, D.J. 弹性/完全塑性固体中I型裂纹扩展平面应力渐近解的材料稳定性准则. Z. Angew. Math. Phys. 74, 174 (2023).
  • Unger, D.J. 弹性/完全塑性固体中I型裂纹扩展的平面应力渐近解. Z. Angew. Math. Phys. 74, 77 pp. 1-21 (2023).
  • D.J. Unger, 应用于I型完全塑性裂纹问题的修正广义Tresca屈服条件, Zeitschrift für angewandte Mathematik und Physik (Journal of Applied Mathematics and Physics) Z. Angew. Math. Phys. 74:1 (2023), pp. 1-11.
  • D.J. Unger, 椭圆曲线族的广义Tresca屈服条件及其在I型裂纹问题中的应用, Zeitschrift für angewandte Mathematik und Physik (Journal of Applied Mathematics and Physics) ZAMP 73:184, 1-17 (2022).
  • D.J. Unger, 用椭圆曲线和weerstrass形式表示的屈服准则, Procedia Structural Integrity, 35, 2-9, 2022.
  • D.J. Unger, 圆端线性槽的反平面点荷载解, Journal of the Mechanical Behavior of Materials, 29, 124-132, 2020.
  • D.J. Unger, 具有圆端线性槽的板的远程拉伸载荷的级数解与有限差分解的比较, Journal of Mechanics of Materials and Structures, 15, 361-378, 2020.
  • D.J. Unger, “ 通过流体类比可视化裂缝驱动力”, Journal of the Mechanical Behavior of Materials, 28, 89-94 (2019).
  • Unger, D.J., 末端具有完全塑性韧带的线弹性反平面槽问题的自由流线流体力学类比,” Journal of Elasticity, 132, 261-270 (2018).
  • Unger, D.J.，“基于非比例塑性应变的理论电阻曲线，” International Journal of Fracture, 210, 207-211 (2018).
  • Unger, D.J.，“大变形理论椭圆孔周围的路径依赖j积分计算”， Journal of the Mechanical Behavior of Materials, 25, pp. 77-81 (2016).
  • Unger, D.J.，“狭缝板的线性弹性解再考察”， 第十四届国际理论与应用力学大会论文集, pp. 2042-2043, IUTAM, Montreal (2016).
  • Unger, D.J., 平面应力弹塑性椭圆孔问题双调和方程的接触变换," J. of Elasticity, 117, 117-139 (2014).
  • Unger, D.J., “ 在拉伸平面应力加载条件下，屈服条件对裂纹尖端前Dugdale塑性条的形成有很大影响,” J. of the Mechanical Behavior of Materials, 21, 37-39 (2012). (Courtesy of DE Gruyter)
  • Unger, D.J. “Linear Elastic Solutions for Slotted Plates,” Journal of Elasticity, 108, 67-83 (2012).
  • Unger, D.J., “ Analytical Fracture Mechanics,” 2nd reprint of text, Dover Publications (2011)
  • Unger, D.J.，“薄板椭圆孔生长过程中的大塑性变形”， Journal of Elasticity, 99, 117-130 (2010).
  • Unger, D.J., “ 基于偏应力张量第二和第三不变量的屈服条件下的平面应力完全塑性I型裂纹问题-第二部分,” Journal of Mechanics of Materials and Structures, 4, 1651-1656 (2009).
  • Unger, D.J., “ 基于偏应力张量第二和第三不变量的屈服条件下的平面应力完全塑性I型裂纹问题-第1部分,” Journal of Mechanics of Materials and Structures, 3, 795-807 (2008).
  • Unger, D.J., 平面应力变形理论下板上椭圆孔的路径无关积分,” Journal of Elasticity, 92, 217-226 (2008).
  • Unger, D.J., 平面应力加载条件下I型裂纹问题的完全塑性解,” ASME Journal of Applied Mechanics, 74, 586-589 (2007).
  • Unger, D.J.,  Tresca屈服条件下的平面应力弹塑性裂纹数值分析及与Dugdale塑性条模型的比较," Mechanics Research Communications, 34, 325-330 (2007).
  • Unger, D.J., 具有连续应力场的平面应力完全塑性I型裂纹解," ASME Journal of Applied Mechanics, 72, 62-67 (2005).
  • Unger, D.J. 平面应力完全塑性I型裂纹的连续应力场与相容速度场, Proceedings of McMat2005, ASME/ASCE/SES力学与材料联合会议，2005年6月1-3日，巴吞鲁日，LA (LSU).  应邀在纪念E.C. Aifantis to mechanics and materials research.  Six page summary on CD.
  • Unger, D.J., 断裂开启模式的完全塑性焦散," Theoretical and Applied Fracture Mechanics, 44, 82-94 (2005).
  • Unger, D.J., Invited Contributor:  Problems of Fracture Mechanics and Fatigue, Eds:  Gdoutos, E.E, Rodopoulos, and Yates, J.R., Kluwer Academic Publishers, Dordrecht, 385-401 (2003).
  • Unger, D.J. and Aifantis, E.C., 一类适用于梯度弹性裂纹问题的简化波动方程解,断裂与损伤力学杂志特别版(特邀编辑). E.E. 法国Facta大学-系列力学、自动控制与机器人 3, 599-612 (2003).
  • Unger, D. J., 火焰问题的单参数群变换相似解," Journal of Elasticity, 66, 93-97 (2002).
  • Unger, D.J., “ Analytical Fracture Mechanics,” reprint of text, Dover Publications (2001)