Симметричная конструкция мелкого заложения состоит из восьми одинаковых ферм, встроенных в шарнирные опоры. 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.
Сферическая мембрана воздушного потока заполнена газом под заданным атмосферным давлением и заданным объемом (эти значения используются только для задания модели КЭ). 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.
Конструкция состоит из четырех ферм, встроенных в шарнирные опоры. 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.
Consider an ASTM A992 W 18×50 beam forspan and uniform dead and live loads as shown in Figure 1. Стержень ограничен максимальной номинальной высотой 18 дюймов (45,72 см). 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.
Криволинейная балка состоит из двух балок с прямоугольным сечением. The horizontal beam is loaded by distributed loading. While neglecting self-weight, determine the maximum stress on the top surface of the horizontal beam.
В тонкостенный сферический резервуар действует внутреннее давление. While neglecting self‑weight, determine the von Mises stress and the radial deflection of the vessel.
На консоль круглого сечения действуют сосредоточенные изгибающая сила и крутящий момент. The aim of this verification example is to compare the reduced stress according to the von Mises and Tresca theories.
Двухслойный резервуар с открытыми концами и массивными стенками загружен внутренним и внешним давлением; таким образом, нет нормального напряжения. While neglecting self‑weight, the radial deflection of the inner and outer radius, and the pressure (radial stress) in the middle radius is determined.
Компактный диск (CD) вращается со скоростью 10 000 об/мин. Therefore, it is subjected to centrifugal force. The problem is modeled as a quarter model. Determine the tangential stress on the inner and outer diameters and the radial deflection of the outer radius.
Четыре колонны закреплены снизу и соединены жестким блоком наверху. The block is loaded by pressure and modeled by an elastic material with a high modulus of elasticity. The outer columns are modeled by linear elastic material and the inner columns by a stress-strain diagram with decaying dependence. Assuming only the small deformation theory and neglecting the structure's self-weight, determine its maximum deflection.
Широкая пластина с отверстием загружена в одном направлении растягивающим напряжением. The plate width is large with respect to the hole radius, and it is very thin, considering the state of the plane stress.