摘要
模拟生物信息流的疲劳短裂纹群体行为研究是材料仿生复效研究的一个重要分支。本文结合了进化生物学、遗传学和病毒学的有关理论成果,指出裂纹演化的过程也是裂纹发展的进化过程。依据基因分离重组和病毒侵染特征,研究了表面随机分布短裂纹随着时间和空间的变化而扩展、汇合规律,指出这种规律性可以靠裂纹基因来控制,裂纹扩展的结果是对其寄生机体的严重损伤,并提出了相应的研究策略。最后对退火45钢材料表面疲劳短裂纹的扩展过程进行了模拟分析,模拟结果表明,短裂纹生物统计数据的模拟结果与实验结果基本一致。
Research of collective short fatigue cracks for simulating bioinformation flow is a new and important branch of biomimetic material science. The view that the process of cracks development is that of cracks evolution is proposed according to evolutionism, genetics and virology. The regulation of initiation and propagation of surface stochastic distributing cracks with spatial and temporal changes was studied according to isolation, recombination and contagious feature of virus. This regulation is controlled by cracks gene, and parasitic organism is damaged heavily as a result of crack propagation. A brand-new strategy of collective short fatigue cracks based on virus feature is proposed. The propagation of surface short fatigue cracks in the annealed steel 45 was simulated. Simulation results agreed well with those of experiments.
出处
《机械科学与技术》
CSCD
北大核心
2005年第6期673-675,共3页
Mechanical Science and Technology for Aerospace Engineering
基金
山东省自然科学基金项目(Y2002F19)
山东省科学技术发展计划项目(012050107)
山东省技术创新项目(鲁经贸技字2003[182])资助
关键词
疲劳短裂纹
生物信息流
仿生复效
遗传裂纹
Short fatigue cracks
Bioinformation flow
Biomimetic recovery
Genetic cracks
