CRACK PROPAGATION UNDER VARIABLE LOAD HISTORIES IN LINEARLY VISCOELASTIC SOLIDS

Starting from the local stresses and deformation field at the tip of a crack and the first law of thermodynamics a nonlinear differential equation is derived for the crack tip velocity in dependence on an arbitrary history of the crack tip stress intensity factor. Conditions for the simplification of this differential equation are discussed. The relevance of these calculations to the mechanical behavior of composite solids is pointed out. The case of cyclic loading (fatigue problem) is discussed in detail.

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Knauss, W G
  • Dietmann, H
• Publication Date: 1970-8

Media Info

• Features: References;
• Pagination: p. 643-56
• Serial:
  • International Journal of Engineering Science
  • Volume: 8
  • Issue Number: 8
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Cracking; Measurement; Repeated loads; Stresses
• Uncontrolled Terms: Crack propagation; Stress intensity factors
• Old TRIS Terms: Crack opening measurement; Cyclic fatigue
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00024821
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jan 21 1974 12:00AM