A New Cellular Automata Model Considering Finite Deceleration and Braking Distance

We present a new cellular automata model for one-lane traffic flow. In this model, we consider the driver prejudgment according to the state of the leading car. We also consider that the vehicle deceleration capability is finite and the braking distance of the high-speed running cars cannot be ignored, which is not considered in most models. Furthermore, comfortable driving is considered, too. Using computer simulations we obtain some basic qualitative results and the fundamental diagram of the proposed model. In comparison with the known models, we find that the fundamental diagram of the proposed model is more realistic than that of the known models.     

热冲击下 A3 钢力学性能的研究

对一定拉伸预载下的Ａ３钢试样进行了快速加热实验,研究了温升率对Ａ３钢力学性能的影响。结果表明:温升率对自由热膨胀影响不大;温升率越大,产生相同塑性变形需要的温度越高;温升率明显影响Ａ３钢内部变化机制;温升率将决定试样热冲击后的晶粒大小。