排序方式： 共有145条查询结果，搜索用时 31 毫秒
71.
72.
根据钻机井架实际工作情况建立井架振动模型,通过测试实验得到动态载荷,应用ANSYS软件对K型钻机井架进行瞬态响应分析。研究结果表明：在动载荷作用下,钻机井架各部分变化具有同时性,而达到最大值的时刻不同,说明井架响应具有滞后性;井架以上下振动为主,同时具有一定程度的扭振;位移变化主要发生在井架顶部,而扭转振幅从顶端向下逐渐减弱;最大振动位移、最大弯矩、最大应力分别为108.33 mm、80990.8 N·m、-0.16354E 09 Pa,均满足设计要求。在瞬态振动过程中,振动衰减最快的是扭转,而X向、Y向、Z向振动位移中X向衰减最快,这与实际情况一致。因此,运用实际动载荷对井架进行瞬态分析为井架结构设计以及安全评估提供了参考依据。 相似文献
73.
运用ANSYS程序对水下的岩质边坡进行数值模拟分析,采用不同的材料强度来模拟岩石和软弱结构面。应用强度折减方法对边坡的强度参数进行折减,直至边坡出现破坏,分析边坡在达到破坏时内部的应力应变情况和位移变形情况。对于波浪力,本文采用简化的波压力方程模拟低频的水波对边坡的波压力影响,并用多个模型比较计算的方法得出最佳的模型尺寸和水下荷载的计算模式。 相似文献
74.
75.
76.
77.
78.
上海市综合深井项目第2阶段将建设9—10个综合深井观测站。利用蠕变方程,通过ANSYS有限元软件进行数值分析,模拟上海市9个观测点在当前地壳运动水平下的形变信息,为综合深井第2阶段建设提供理论基础。 相似文献
79.
80.
Study on the thermal insulation performance of a new seabed sediment fidelity sampler based on ANSYS
A new seabed sediment fidelity sampler was developed and its thermal insulation performance was studied and analyzed. The
temperature distribution simulation indicated that the sample quality could be insured by using this new sampler. Based on
ANSYS10, the temperature finite element model of the sample cylinder was established. According to the law of conservation
of energy, the unsteady heat transmit equation of the sampler under solid-liquid coupling condition was derived, then the
mathematical model calculation was carried out by using a mixed finite-element finite-difference method, and two thermal insulation
methods were used. The simulation was carried out by using the thickness of the thermal insulation layer and heat conductivity
as the variable parameters and the temperature distribution of the sampler and related influencing factors were obtained.
Optimization analysis was conducted using the simulation data and related parameters and the magnitude ranges of the parameters
were obtained that could meet the design temperature requirements. The experimental data and simulation results indicated
that the results were in good agreement with the realities, and this sampler might be of value for seabed sediment sampler
design and manufacture. 相似文献