A quadratic assumed natural strain curved triangular shell element

摘要

In this paper, a six--node triangular C" curved shell element is developed by the assumed natural or covariant strain (ANS) method. All the sampled natural strains are optimal with respect to the derivative of a prescribed cubic field in a subparametric element. Numerical examinations reveal that the element shows no sign of locking, passes all the patch tests and yields satisfactory accuracy.