What are the aspects of high temperature foam solution bending
1. A straight line segment perpendicular to the middle surface of the plate before deformation, which is still a straight line perpendicular to the elastic curved surface after deformation, and the length is unchanged;
2. The transverse normal stress and shear stress are very small compared with the other three components, and the deformation caused by it can be ignored;
3. The points in the plane of the plate are not parallel to the displacement of the middle surface; the panel of the sandwich structure mainly bears tensile force and pressure, and the core is equivalent to the web, which mainly bears the shearing force when bending. Therefore, in the construction, a thinner, high-strength, and high-strength material is usually used as the panel, and a material having a small density, a large thickness, and a certain shearing ability is used as a core layer, and they are joined by a bonding method. .
The main structural feature of the sandwich structure is that the bending rigidity is large, and it can withstand a large bending load under the condition of small structural quality, that is, it has a high bending stiffness mass ratio; the high temperature resistant foam has good fatigue resistance; the surface of the component Smooth and flat, with a good aerodynamic surface, it is widely used to make external parts for aircraft and rockets.
Reference source:https://www.pmifoam.com/
2. The transverse normal stress and shear stress are very small compared with the other three components, and the deformation caused by it can be ignored;
3. The points in the plane of the plate are not parallel to the displacement of the middle surface; the panel of the sandwich structure mainly bears tensile force and pressure, and the core is equivalent to the web, which mainly bears the shearing force when bending. Therefore, in the construction, a thinner, high-strength, and high-strength material is usually used as the panel, and a material having a small density, a large thickness, and a certain shearing ability is used as a core layer, and they are joined by a bonding method. .
The main structural feature of the sandwich structure is that the bending rigidity is large, and it can withstand a large bending load under the condition of small structural quality, that is, it has a high bending stiffness mass ratio; the high temperature resistant foam has good fatigue resistance; the surface of the component Smooth and flat, with a good aerodynamic surface, it is widely used to make external parts for aircraft and rockets.
Reference source:https://www.pmifoam.com/
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