THE EFFECT OF MEAN SHEAR-STRESS ON TORSIONAL FATIGUE BEHAVIOR

被引：43

作者：

WANG, CH

MILLER, KJ

机构：

[1] Department of Mechanical and Process Engineering, University of Sheffield, Sheffield, S1 3JD, Mappin Street

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1991年 / 14卷 / 2-3期

关键词：

D O I：

10.1111/j.1460-2695.1991.tb00659.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Torsional tests under different mean shear stresses were conducted at room temperature using a 1.99% NiCrMo steel. A technique was developed to control both the mean and the alternating shear stresses. It is shown that the mean shear stress plays a fundamental role in promoting stage I, mode II short crack growth. The effect of mean shear stress on the plastic deformation at stage II crack tips is discussed, which illustrates the mean shear effect on the transition between stage I and stage II crack growth. The polarity of mean shear stress is found to have no effect on the fatigue crack growth rate and the fatigue lifetime of an isotropic material. A model is proposed to account for the effect of mean shear stress on the fatigue lifetime under torsional loading. Copyright © 1991, Wiley Blackwell. All rights reserved

引用

页码：293 / 307

页数：15

共 20 条

[1]

Smith J.O., (1942)

[2]

Gough H.J., Engineering steels under combined cyclic and static stresses, Proc. Inst. Mech. Engng, 160, pp. 472-491, (1949)

[3]

Forsyth P.J.E., pp. 76-94, (1961)

[4]

Ewing J.A., Humfrey J.C.W., The fracture of metals under repeated alternations of stress, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 200, pp. 241-250, (1903)

[5]

Wang C.H., Miller K.J., (1991)

[6]

Zachariah K.P., Miller K.J., Fatigue testing rig, Engineering, 214, pp. 563-565, (1974)

[7]

Nadai A., Theory of Flow and Fracture of Solids, 1, (1956)

[8]

Carbonell E.P., Brown M.W., A study of short crack growth in torsional low cycle fatigue for a medium carbon steel, Fatigue & Fracture of Engineering Materials and Structures, 9, pp. 15-33, (1986)

[9]

Oldroyd P.W., Radon J.C., Reversal of cyclic creep in mild steel and copper, Fatigue Engng Mater. Struct., 1, pp. 297-306, (1979)

[10]

Pilo D., Reik W., Mayr P., Machrauch E., Cyclic induced creep of a plain carbon steel at room temperature, Fatigue Engng Mater. Struct., 1, pp. 287-295, (1979)

← 1 2 →