Question

1. A large, thick plate contains a through crack with total crack length 2a, lying in the x-axis (figure below). The size of the specimen is much larger than the crack. The toughness of the material is Gc-11.7 KJ / m2 , the Young's modulus of the material is E-200 GPa, the Poisson's ratio v 0.25, and the yield stress is sufficiently high. If the remote stresses are σ o, :: 200 MPa. Try-100 MPa, what should be the critical crack length 2a? [Hint: consider mixed mode] xx-100MPa, txy Txy Ơxx 2a Ơyy

Answer 1

EGIc TiC IC E- 2ou GiPOL I 5T | 2.19 3BXlD K46.84 MPam 6 xiDo Че Ji 346 46.64 1 Y245 a z u.64 mm 2a -23- 2gmm