This paper develops a third order diffraction theory for the third order wave loads. Our method has been implemented for bodies of revolution with vertical axes, but the theory is also available for arbitrary bodies. ...This paper develops a third order diffraction theory for the third order wave loads. Our method has been implemented for bodies of revolution with vertical axes, but the theory is also available for arbitrary bodies. Numerical tests were made to validate the numerical code by comparing the third order force with some published ones on a uniform cylinder. The method has also been used to compute the third order moments on a uniform cylinder and third order forces and moments on a truncated cylinder.展开更多
Stress intensity factors for a three dimensional rectangular interfacial crack were considered using the body force method. In the numerical calculations, unknown body force densities were approximated by the products...Stress intensity factors for a three dimensional rectangular interfacial crack were considered using the body force method. In the numerical calculations, unknown body force densities were approximated by the products of the fundamental densities and power series; here the fundamental densities are chosen to express singular stress fields due to an interface crack exactly. The calculation shows that the numerical results are satisfied. The stress intensity factors for a rectangular interface crack were indicated accurately with the varying aspect ratio, and bimaterial parameter.展开更多
文摘This paper develops a third order diffraction theory for the third order wave loads. Our method has been implemented for bodies of revolution with vertical axes, but the theory is also available for arbitrary bodies. Numerical tests were made to validate the numerical code by comparing the third order force with some published ones on a uniform cylinder. The method has also been used to compute the third order moments on a uniform cylinder and third order forces and moments on a truncated cylinder.
文摘Stress intensity factors for a three dimensional rectangular interfacial crack were considered using the body force method. In the numerical calculations, unknown body force densities were approximated by the products of the fundamental densities and power series; here the fundamental densities are chosen to express singular stress fields due to an interface crack exactly. The calculation shows that the numerical results are satisfied. The stress intensity factors for a rectangular interface crack were indicated accurately with the varying aspect ratio, and bimaterial parameter.
