摘要
It is only an assumption to simplify the reality that there is no contact force between cracks. In many cases, unilateral crack may be more close to reality, i.e. there is a contact force between cracks. A dynamic experimental system was used to measure the contact force in organic glass with cracks. Curves of time versus contact force established through experiments show that the magnitude of contact force relates to the interrelation among external forces, contact points and falling points.
It is only an assumption to simplify the reality that there is no contact force between cracks. In many cases, unilateral crack may be more close to reality, i.e. there is a contact force between cracks. A dynamic experimental system was used to measure the contact force in organic glass with cracks. Curves of time versus contact force established through experiments show that the magnitude of contact force relates to the interrelation among external forces, contact points and falling points.
基金
theNationalNaturalScienceFoundationofChina(GrantNo .10 2 72 0 3 6)
