В вилочные опоры затем встроена конструкция из двутаврового профиля. 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.
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.
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.
На рисунке 1 показана балка ASTM A992 W 24x62 со сдвигом на концах 48 000 и 145 000 kips от постоянной и временной нагрузки соответственно. Verify the available shear strength of the selected beam, based on LRFD and ASD.
Колонна состоит из бетонного сечения (прямоугольник 100/200) и стального сечения (профиль I 200). 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.
Конструкция фермы состоит из трех стержней (один стальной и два медных), соединенных жестким стержнем. The structure is loaded by a concentrated force and a temperature difference. While neglecting self‑weight, determine the total deflection of the structure.
У консоли с прямоугольным сечением на конце имеется масса. 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.
Двухэтажная однопролетная каркасная конструкция подвержена сейсмической нагрузке. The modulus of elasticity and cross‑section of the frame beams are much larger than those of the columns, so the beams can be considered rigid. The elastic response spectrum is given by the standard SIA 261/1:2003. Neglecting self-weight and assuming the lumped masses are at the floor levels, determine the natural frequencies of the structure. For each frequency obtained, specify the standardized displacements of the floors as well as equivalent forces generated using the elastic response spectrum according to the standard SIA 261/1.2003.
Данный пример служит для демонстрации ограничения диафрагмы. The application is shown on a two-story structure. The structure is loaded by means of lateral forces according to Figure 1. Determine the maximum deflection of the structure ux in the direction of the loading forces using both the diaphragm constraint and the plate model of the floor.
Консоль прямоугольного сечения лежит на упругом основании Пастернака и загружена распределенной нагрузкой. The image shows the calculation of the maximum deflection and maximum bending moment.
Кирпичная стена подвержена распределенной нагрузке в середине своего верхнего сечения. The Isotropic Masonry 2D material model is compared with the Isotropic Linear Elastic model, with surface stiffness property Without Tension in the nonlinear calculation.
A structure is made of two trusses of unequal length, which are embedded into the hinge supports. The structure is loaded by concentrated force. Собственный вес не учитывается. Determine the relationship between the loading force and the deflection, considering large deformations.
Конструкция из двутаврового профиля полностью закреплена на левом конце и встроена в подвижную опору на правом конце. The structure consists of two segments. The self-weight is neglected in this example. Determine the maximum deflection of the structure, the bending moment on the fixed end, the rotation of segment 2, and the reaction force at point B by means of the geometrically linear analysis and the second-order analysis. The verification example is based on the example introduced by Gensichen and Lumpe.
Тонкостенная консоль из QRO-профиля полностью закреплена на левом конце, и депланация включена. The cantilever is subjected to torque. Small deformations are considered, and the self-weight is neglected. Determine the maximum rotation, primary moment, secondary moment, and warping moment. The verification example is based on the example introduced by Gensichen and Lumpe.
К тому же, на свободном конце консоли действует момент, Using the geometrically linear analysis and large deformation analysis, and neglecting the beam's self-weight, determine the maximum deflections at the free end. The verification example is based on the example introduced by Gensichen and Lumpe.
Стержень с заданными граничными условиями нагружен крутящим моментом и нормальной силой. Neglecting its self-weight, determine the beam's maximum torsional deformation as well as its inner torsional moment, defined as the sum of a primary torsional moment and torsional moment caused by the normal force. Provide a comparison of those values while assuming or neglecting the influence of the normal force. The verification example is based on the example introduced by Gensichen and Lumpe.
Рассмотрим жесткую трубу строительных лесов, закрепленную снизу с помощью Узловой опоры лесов и нагруженную моментом и силой. Calculate the maximum deflection with consideration of initial slippage.
Рассмотрим жесткую трубу строительных лесов, закрепленную снизу с помощью Узловой опоры лесов и нагруженную моментом и силой. Calculate the maximum radial deflection by exceeding the capacity of the scaffolding support.
Расчет изменений во времени для консольной балки (система SDOF), возбужденной периодической функцией. Vertical deformations and accelerations calculated with direct integration and modal analysis in RF‑/DYNAM Pro - Forced Vibrations are compared with the analytical solution.
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.
Стальной канат или мембрана со штифтами на обоих концах нагружены распределенной нагрузкой. Neglecting its self-weight, determine the maximum deflection of the structure using the large deformation analysis.
Вертикальная консоль квадратного сечения нагружена сверху растягивающим давлением. The cantilever consists of an isotropic material. Calculate the deflection.
A structure is made of two trusses, which are embedded into the hinge supports. The structure is loaded by concentrated force. Собственный вес не учитывается. Determine the relationship between the loading force and the deflection, considering large deformations.
Конструкция из двутавровых ферм опирается на обоих концах пружинные скользящие опоры и нагружена поперечными силами. The self-weight is neglected in this example. Determine the deflection of the structure, the bending moment, the normal force in the given test points, and the horizontal deflection of the spring supports.
Балка полностью закреплена (депланация ограничена) на левом конце и поддерживается вилочной опорой (депланация включена) на правом конце. The beam is subjected to a torque, longitudinal force, and transverse force. Determine the behavior of the primary torsional moment, secondary torsional moment, and warping moment. The verification example is based on the example introduced by Gensichen and Lumpe.
Стальная консоль с прямоугольным сечением полностью защемлена на одной стороне и свободно на другой. The aim of this verification example is to determine the natural frequencies of the structure.
A cantilever beam with an I-beam cross-section of length L is defined. The beam has five mass points with masses m acting in the X-direction. Собственный вес не учитывается. The frequencies, mode shapes, and equivalent loads of this 5-DOF system are analytically calculated and compared with the results from RSTAB and RFEM.