A unidirectional [0] composite beam of longitudinal modulus \(E_{1}\), thickness \(b\), and depth \(h\) has a crack of length \(a\) and is loaded by the equal and opposite forces \(P\), as shown in Figure 9.29. Determine \(G_{\mathrm{I}}\), the mode I strain energy release rate for this crack. Your answer should be expressed in terms of the given parameters.

Transcribed Image Text:

FIGURE 9.29 h/2 P4 0 direction P a Crack h