The mechanical properties of a U-shaped metal damper depend on geometric parameters. We analyzed the parameter sensitivity of the component using ANSYS finite element software. The initial model was 40 mm long, 100 mm wide, and 9 mm thick. Then, we compared the stiffness of the components for different geometric parameters. The results show that the U-shaped metal damper exhibits good energy dissipation.
Boundary optimized dampers show excellent deformability and excellent energy-dissipation capacity. We also studied the effect of material ratio on the energy-dissipation capacity. The results indicate that the boundary optimized dampers meet the full stress design criteria. However, the ellipse-optimized model has the lowest material utilization rate and a higher stress concentration. In this study, we present a simple and efficient method for optimizing metal dampers.
The stiffness of a U-shaped metal damper is influenced by the size of the group distance. The maximum hysteretic loop area corresponds to the largest displacement loading. The stiffness of the U-shaped steel damper is therefore most sensitive in this range. In addition to the stiffness, other parameters of the U-shaped steel damper were analyzed to determine the energy dissipation capacity. The stiffness of a U-shaped damper can be calculated through ANSYS software.
A low-yield point steel plate damper can be made with two kinds of steel. One type is used for infill walls. This design requires braces to prevent the damper from moving out of place. Moreover, the damper is cost-effective and easy to install. With all these features, the damper has a large application prospect. So, if you're in the market for a metal damper, make sure to check out the details and design of the metal damper!
Another type of
metal damper is a composite damper. It has two outer structural members and one inner one. The first one is attached to the first surface of the structural member, and the second one is attached to the second. The damper's outer structural member is connected to the other one by means of bolts. Hence, the installation of the damper in a composite structure is quick and easy, and there's no need for specialized tooling.
A traditional metal damper has two problems. Firstly, it has a comparatively large thickness. In order to achieve a higher rigidity, the structural members have to be machined to a flatness of 0.005 inch. This process can be expensive, and requires large portions of the structural member to be removed. Furthermore, it weakens the damper in the process. Therefore, we recommend using a composite metal damper instead.
The other common problem with composite dampers is that the bolts are usually too long, which makes them unsuitable for use as a damper. Therefore, you must be very careful while choosing the bolt pattern. For example, in FIG. 15c, bolts are placed around the perimeter of the outer rigid members. Choose the bolt pattern that best matches your situation, and avoid interfering with other parts of the damper. If you are not sure, contact an expert in composite dampers.
The damper's geometry is critical when analyzing the performance of a structure under seismic loading. The ideal configuration for a damper is that it is rigid enough to resist the earthquake's energy. The damper is made of three pieces of Q345 steel plates, two pieces of LY160 steel plates, and a beam element. The dampers are then assembled and the beam element simulates the diagonal brace. It is very important to note that the damper's rigidity is a critical factor in determining the overall performance of a multilayer frame structure.
Different installations allow different types of installations. In general, the damping element is positioned between two structural members, with the outer surface of each attached to separate structural members. It can be stacked vertically to achieve a vertical configuration as well, and its outer rigid members are attached to different parts of the structure. There are three main types of modular dampers: stacked dampers and "I" beam dampers. The latter includes outer rigid members, vibration damping material layers, and adhesive layers.
Integrated dampers are another type of damper. These are made of five steel plates of similar thickness. The material properties and proportion of the steel plates differ for these two types. The numerical simulation of the combined dampers has verified the adjustability of their yield stress. We also studied the seismic capacity and nonlinear dynamic responses of different types of combined dampers. The boundary optimized damper exhibits better energy dissipation capacity than the interior-optimized damper.
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