Taking the radius of caustic surface as a threshold, one can estimate whether or not an individual mode is absorbable.
采用一种基于射线理论和模式理论相结合的方法 ,用模式理论计算焦散面半径 ,以此半径为判据用射线方法确定穿过纤芯的模式 ,即能被吸收的模式 。
Using wave field continuation method to remove caustic effects;
利用波场延拓方法消除焦散影响
Study of the scattering field in the caustic region of a two-dimensional concave antenna based on symplectic geometrical theory;
基于辛几何理论的二维凹面天线焦散区散射场
The method of solving wave equations in caustic domain by symplectic geometrical theory, and the method of simplifying two-dimension wave equations in slowly varying nonhomogeneous medium by wavelet-transform theory are proposed.
本论文探讨了Maslov方法在波动方程高频近似中的应用及焦散区的具体求解方法；讨论了用小波变换化简二维非均匀缓变介质条件下的波动方程；本文还讨论了凹面反射的焦散现象、凹面反射焦散区的奇性种类，讨论了二、三维凹面反射波动场非焦散区、焦散区的计算方法。
Solving the propagation and caustics of electromagnetic wave in two-dimension inhomogeneous media based on symplectic geometric theory;
基于辛几何理论求解电磁波在二维非均匀媒质中的传播与焦散问题
In order to avoid caustics phenomenon the amplitude is calculated in phase space.
从声波波动方程出发,在波动理论的高频近似下,导出了有限差分射线走时计算方法,并利用声传播的可逆性和费马原理建立射线路径,充分考虑实际激发的声波具有有限带宽的特点,用“波径”来描述射线,考虑到复杂介质易出现焦散现象,采用了在相空间中计算波场。
Multi-perspective rendering has a variety of applications, examples include lens refraction, curved mirror reflection, caustics, as well depiction and visualization.
多投射渲染可以应用到很多方面，包括曲镜面的反射、折射、焦散和可视化等。
A blast loading measuring system with stable performance was established based on the principle of dynamic caustics.
用普通药包掏槽爆破和切缝药包掏槽控制爆破进行了透明材料模型的透射式动焦散试验对照试验 ,结果表明 ,在相同药量的情况下 ,普通药包掏槽爆破的裂纹在各炮孔周围为随机分布 ,裂纹数目多且较短 ,各掏槽炮眼间没有形成贯通裂纹 ,其焦散斑随裂纹分布 ;采用切缝药包掏槽控制爆破的裂纹主要沿切缝方向分布且较长 ,各掏槽炮眼间形成贯通裂纹 ,焦散斑主要分布在切缝方向上 。
It is an effective new method to make further analysis of crack propagation for blasting fracture with dynamic caustics.
应用爆炸加载的透射式动焦散线测试系统,分析了爆炸裂纹的扩展规律。
An application example was given for solving scattering field of caustic region for a two-dimension elliptical antenna with the presented method.
还给出二维椭圆形反射天线焦散区散射场的计算实例,计算结果证明了辛几何理论结合辛差分格式求解散射场方法的有效性。
Based on the principle of elasto -plastic fracture mechanics and the caustics method,three experitnental methods for the measurement of COD are proposed and discussed.
根据焦散线法和弹塑性断裂力学原理，提出和分析了测量裂纹尖端ＣＯＤ的三种实验方法，对焦散线法和伪焦散线法联合测定ＣＯＤ的方法进行了深入的研究，并列举了该法的具体应用，从而改进了ＴｈｅｏｃａｒｉｓＰＳ提出的经典焦散线测量方法。
In this article, the caustics method and holo-photoelasticity method are used to investigate the distribution of contact forces inside a pack of discrete square cells submitted to a compressive load.
本文运用焦散线法和激光全息光弹法对受集中荷载作用的颗粒堆中力的分布进行了较为详细的实验研究,通过对实验数据的定量分析得知:与传统连续介质弹性理论所揭示的规律不同,堆积体内部力的传递与分布遵循抛物线型方程。
The 3-D contact stress in bolted joint parts and its contact coverage are investigated ex-perimentally with the photoelastic method and the newly developed caustics method.
所得实验结果为汽缸盖接触联结系统的设计、机械螺栓联结零件的有限元计算及其可靠性分析，提供了实验依据，并开拓了焦散线法实验的应用范围。