模拟地震的弹簧滑块模型的混沌运动
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
我们构造了一种自由度为2的双弹簧滑块系统,讨论模型参数的不均匀性和滑块间的相互作用与复杂现象的关系。假定滑块在所受力小于其静摩擦力时保持静止,因此,只有发生了滑动,两滑块所受力之差才改变。如果我们以两滑块受力之差为变量,就可以构造一种一维的映射。这种映射直观地显示了系统的演化,反映了方程终态解的形态。结果表明,用混沌运动来描述地震现象可能是较为合理的。
The two spring-blocks system with 2 freedom degrees in earthquakesimulation is built up in this paper. The effect of non-homogeneity of model parameters andthe interactiOn between blocks on the complicated phenomena are discussed based on our sys-tem,It is supposed that blocks keep motionless until the driving forces subjected by blocksexceeds the static friction force,so the difference of forces on two blocks will change only af-ter slip motion has begun. One-dimension mapping may be got if we put the difference of-forces on two blocks as a variable,This mapping directly shows the system evolution and theformation of ultimate solutions. The results indicate that it may be reasonable to explainearthquakes evolution using chaotic motion theory.
引文
1Bak,P,C,TangandK,Wiesenfeld,1988,Self-organizedcriticallty,PhysicaReviewA,Vol.38,No.1,364-3742Bak.P.andC,Tang,1989,Earthquakesasaself—organizedcriticalphenomenon,J.Geophys.Res.Vol.94,vol.B11,15635-156373Cao,T.-Q.andK,Aki,1985,Seismicitysimulationwithamass-springmodelandadisplacementhardening-softeningfrictionlaw.Pageoph,Vol.122,10-244Cohen,S,1979,Numericalandlaboratorysimulationoffaultmotionandedrthquakeoccurrence,J.Geophys.Res.,17,61-725Huang,J.andD.L,Turcotte,1990,Areearthquakeanexampleofdeteministicchalos?,Geophys.Res.Lett.,Vol17,No.3.223—2266Nussbaum,J.andA.,Ruina,1987,Atwodegree-of-freedomeartliquakemodelwithstaticdynamic/friction,Pageoph,Vol.125,No.4,629-6567Keilis-Borok,V.I,1990.LithosphereoftheEarthasnon-linearsystemwithimplicationsforearthquakepredicton,ReviewsofGeophysics,28,Feb.1,19-348陈,等.分形与混沌在地球科学中的应用.北京,学术期刊出版社1989.1-2109季颖,陈.从地质目录重建复杂系统的动力学模型.中国地球物理学会年刊,1991,212

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心