Das eine Reihe an bekannten Benchmark-Szenarien für Windsimulation vorgestellt。 Der Nachfolgende Beitrag dreht sich dabei um den “案例 A - 高层建筑,形状为 2:1:1”。 Im Folgenden wird das beschriebene Szenario in RWIND2 nachgebildet und die Ergebnisse mit den simulierten und derexperimentellen Resultate des AIJ verglichen.
在 1990-1/NA/A1:2012-08 的基础上,根据 DIN EN 1992-1-1/NA/A1:2015 设计了一根钢筋混凝土柱,其常温下承载力承载力(ULS)是正常的。 本设计采用名义曲率法;见 DIN EN 1992-1-1,章节 5.8.8。 该柱位于三跨框架结构的边缘,该结构由 4 根悬臂柱和 3 个铰接在柱上的独立桁架组成。 柱子承受垂直方向的荷载,预制桁架的作用是雪荷载和风荷载。 将结果与文献进行了比较。
货架支架采用工字形截面。 The axial rotation is restricted on both ends while warping is enabled. The structure is loaded by two transverse forces in the middle. The verification example is based on the example introduced by Gensichen and Lumpe.
由四根倾斜杆件和一个竖向杆件组成的平面桁架,在上部节点处施加竖向力和与平面外的力。 Assuming the large deformation analysis and neglecting the self-weight, determine the normal forces of the members and the out-of-plane displacement of the upper node.
验算示例描述了作用在建筑物模型上多个风向的风荷载。 The model consists of eight cubes. The velocity fields obtained by the RWIND simulation are compared with the measured values from the experiment. The experimental data are measured using a thermistor anemometer in the wind tunnel.
验算示例描述了作用在建筑物地面墙壁上的压力荷载。 The buildings are simplified to rectangular objects and scaled down while maintaining the elevation ratios. The pressure distribution on the walls of the model of a medium-high building was conducted by an experiment. The chosen results (pressure coefficient Cp) are compared with the measured values.
验算示例描述了城市街道中的高层建筑周围流动(按比例模型)。 The example is given by the Architectural Institute of Japan (AIJ). The chosen results (velocity magnitude) are compared with the measured values.
This verification example compares wind load calculations on a duopitch roof building using the ASCE 7-16 standard and using CFD simulation in RWIND Simulation. 该模型根据规范 ASCE 7-16 进行定义的。
This verification example compares wind load calculations on a flat roof building using the ASCE 7-16 standard and using CFD simulation in RWIND Simulation. 该模型根据规范 ASCE 7-16 进行定义的。
一个球面上有均匀的粘性流体流。 The velocity of the fluid is considered at infinity. The goal is to determine the drag force. The parameters of the problem are set so that the Reynolds number is small and the radius of the sphere is also small, thus the theoretical solution can be reached - Stokes flow (G. G. Stokes 1851).
在验算示例中比较了使用规范 EN 1991-1-4 和使用 RWIND Simulation 中的 CFD 模拟对双坡屋顶建筑物的风荷载进行计算。 The building is defined according to the sketch, and the inflow velocity profile is taken according to the standard EN 1991-1-4.
在验算示例中比较了欧洲规范EN 1991-1-4和使用RWIND Simulation中的CFD模拟计算一栋平屋面建筑物的风荷载。 The building is defined according to the sketch, and the inflow velocity profile is taken according to the standard EN 1991-1-4.
在两个同心圆柱体的两个半径半径之间的各向同性预应力拉伸膜,该预应力位于一个不与竖轴平行的平面上。 Find the final minimum shape of the membrane - the helicoid - and determine the surface area of the resulting membrane. The add-on module RF-FORM-FINDING is used for this purpose. Elastic deformations are neglected both in RF-FORM-FINDING and in the analytical solution; self-weight is also neglected in this example.
该验算示例是基于验算示例 0122 编写的. A single-mass system without damping is subjected to an axial loading force. An ideal elastic-plastic material with characteristics is assumed. Determine the time course of the end-point deflection, velocity, and acceleration.
圆柱形膜结构通过各向同性预应力被拉伸。 Find the final minimal shape of the membrane - catenoid. Determine the maximum radial deflection of the membrane. The add-on module RF-FORM-FINDING is used for this purpose. Elastic deformations are neglected both in RF-FORM-FINDING and in the analytical solution; self-weight is also neglected in this example.
一个对称的浅结构结构,由八个相同的桁架构件组成,这些桁架嵌在铰支座中。 The structure is loaded by a concentrated force and alternatively by imposed nodal deformation over the critical limit point when the snap-through occurs. Imposed nodal deformation is used in RFEM 5 and RSTAB 8 to obtain the full equilibrium path of the snap-through. The self-weight is neglected in this example. Determine the relationship between the actual loading force and the deflection, considering large deformation analysis. Evaluate the load factor at the given deflections.
绳索上的施加荷载都为均匀荷载。 This causes the deformed shape in the form of the circular segment. Determine the equilibrium force of the cable to obtain the given sag of the cable. The add-on module RF-FORM-FINDING is used for this purpose. Elastic deformations are neglected both in RF-FORM-FINDING and in the analytical solution; self-weight is also neglected in this example.
球形球形膜充满压力和体积(这些值仅用于有限元模型定义)的气体。 Determine the overpressure inside the balloon due to the given isotropic membrane prestress. The add-on module RF-FORM-FINDING is used for this purpose. Elastic deformations are neglected both in RF-FORM-FINDING and in the analytical solution; self-weight is also neglected in this example.
该结构由四个桁架杆件组成,桁架铰接。 The structure is loaded by a concentrated force and alternatively by imposed nodal deformation over the critical limit point, when snap-through occurs. Imposed nodal deformation is used in RFEM 5 and RSTAB 8 to obtain the full equilibrium path of the snap-through. The self-weight is neglected in this example. Determine the relationship between the actual loading force and the deflection, considering large deformation analysis. Evaluate the load factor at given deflections.
截面为 ASTM A992 W 18×50 的梁用于跨度和均布活荷载,如图 1 所示。 The member is limited to a maximum nominal depth of 18 inches. The live load deflection is limited to L/360. The beam is simply supported and continuously braced. Verify the available flexural strength of the selected beam, based on LRFD and ASD.
在两个支座之间悬挂一根非常刚的绳索。 Determine the equilibrium shape of the cable (the catenary), consider the gravitational acceleration, and neglect the stiffness of the cable. Verify the position of the cable at the given test points.
布置了一块正交各向异性的矩形薄板,并施加均布压力。 The directions of axes x and y coincide with the principal directions. While neglecting self-weight, determine the maximum deflection of the plate.
柱由截面混凝土(矩形100/200)和钢截面(截面 I 200)组成。 It is subjected to pressure force. Determine the critical load and corresponding load factor. The theoretical solution is based on the buckling of a simple beam. In this case, two regions have to be taken into account due to different moments of inertia and material properties.
施加阻尼器的单质量系统受到恒定的力。 Determine the spring force, damping force, and inertial force at the given test time. In this verification example, the Kelvin--Voigt dashpot (namely, a spring and a damper element in serial connection) is decomposed into its purely viscous and purely elastic parts, in order to better evaluate the reaction forces.
对该梁施加面外力,其截面为矩形截面。 This force causes a bending moment, torsional moment, and transverse force. While neglecting self-weight, determine the total deflection of the curved beam.
曲线梁由两个截面为矩形的梁组成。 The horizontal beam is loaded by distributed loading. While neglecting self-weight, determine the maximum stress on the top surface of the horizontal beam.
一个薄壁圆锥形容器中充满水。 Thus, it is loaded by hydrostatic pressure. While neglecting self-weight, determine the stresses in the surface line and circumferential direction. The analytical solution is based on the theory of thin-walled vessels. This theory was introduced in Verification Example 0084.
向紧密盘绕的螺旋弹簧施加压力。 The spring has middle diameter D, wire diameter d, and it consists of i turns. The total length of the spring is L. Determine the total deflection of the spring for the member model and one‑turn deflection for the solid model.
本文模拟了一个受压壳屋面结构,其中直线边缘为自由边缘,弯曲边缘约束 y 方向和 z 方向平移边缘。 Neglecting self‑weight, compute the maximum (absolute) vertical deflection, and compare the results with COMSOL Multiphysics 4.3.
该梁固定在矩形截面,并在其作用下竖向固定偏心。 Considering the small deformation theory, neglecting the self‑weight, and assuming that the beam is made of isotropic elastic material, determine the maximum deflection.
定义一个简单振动器,由质量 m(只考虑 x 方向)和刚度为 k 的弹簧组成。 The mass is embedded on a surface with Coulomb friction and is loaded by constant-in-time axial and transverse forces.
一种双金属带材,由茵瓦钢和铜组成。 The left end of the bimetallic strip is fixed, and the right end is free, loaded by temperature difference. While neglecting self-weight, determine the deflection of the bimetallic strip (free end).
桁架结构由一钢两根铜杆组成。 The structure is loaded by a concentrated force and a temperature difference. While neglecting self‑weight, determine the total deflection of the structure.
双质量系统由两个轴和两个质量组成,它们的质量是在一定距离处的集中质量,这些质量和惯性矩作为节点质量。 The left shaft is fixed, and the right mass is free. Neglecting the self‑weight of the shafts, determine the torsional natural frequencies of the system.
该类型的悬臂梁截面为矩形,在端部有一个质量块。 Furthermore, it is loaded by an axial force. Calculate the natural frequency of the structure. Neglect the self‑weight of the cantilever and consider the influence of the axial force for the stiffness modification.