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Weertman:
Mathblock anchor weertman \tau_d = C N |u|^{q-1} u
Schoof
Mathblock anchor schoof \tau_d = \mu N \left( \frac{|u|^{q-1}}{|u| + \Lambda A N^n} \right) ^{q} u
Plastic
Mathblock anchor plastic \tau_d = \mu N |u|^{-1} u
Each requirement is to be listed under a ”section” heading, as there will be a one-to-one correspondence between requirements, design, proposed implementation and testing. Requirements should not discuss technical software issues, but rather focus on model capability. To the extent possible, requirements should be relatively independent of each other, thus allowing a clean design solution, implementation and testing plan.
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