Closure to “Discussion of ‘Damage Modeling in Random Short Glass Fiber Reinforced Composites Including Permanent Strain and Unilateral Effect’ ” (2006, ASME J. Appl. Mech., 73, pp. 347–348) OPEN ACCESS

[+] Author and Article Information
Hicham Mir, Mario Fafard, Benoit Bissonnette, Marie-Laure Dano

Department of Civil Engineering,  Universite Laval, Quebec City, Quebec G1K 7P4 Canada

J. Appl. Mech 73(2), 349 (Mar 01, 2006) (1 page) doi:10.1115/1.2127956 History:

If we compare the first equation of the Discussion to Eq. (2) of the paper, we can remark that the authors of the Discussion have misunderstood the former equation,

Considering this, their remark is irrelevant. Nevertheless, we can observe easily that in the particular case [D]=0, Eq. (2) is simplified to Eq. (1) of the paper,
Furthermore, we can observe that if we put [D]=0, the fourth-order damage operator defined in Eq. (6) becomes [M]=[I4]. Thus, in this particular case, Eq. (9) is exactly equal to the classical complementary energy presented at Eq. (1).

The authors of the Discussion mentioned that “when the principal axes of the damage tensor do not coincide with the one of the stress tensor,” some relations presented in the paper are not applicable. We agree with this affirmation because we mentioned it in Sec. 2.3 of the paper and in the Conclusion. When we spoke about proportional loading, this means that the principal stress directions, and thus, those of damage tensor, are identical and do not change during loading. We apologize not having mentioned it more clearly at the beginning of the paper.

Copyright © 2006 by American Society of Mechanical Engineers
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