Author(s): HEN Yong, QIN Kai-rong, TENG Zhong-zhao, Liu Zhao-rong
Pages: 409-414
Year: 2000 Issue:  4
Journal: CHINESE QUARTERLY OF MECHANICS
Keyword:  artery; residual stress; pulsatile pressure; circumferential stress; longitudinal limit constraint;
Abstract: In this paper, the effects of the sinusoidal pulsatile pressure on the stress distribution in the artery wall will be studied. Results show that the acceleration term in the equation of motion has little influence on the stress in the artery wall, and can be ignored. At in vivo longitudinal limit constraint, the variation of the circumferential stress with time have the same phase and period with the curves of the pulsatile pressure, and the amplitudes have no change with the frequency. During a cardiac cycle, the mean circumferential stress in the inner and outer wall only relates to the mean pressure, and the pulsatile stress value is mainly connected with the pulsatile pressure. The change of mean pressure has some influence to the pulsatile value in the inner wall, and little influence in the outer wall.