1. Calculation of the weight of pure aluminum plate
1. Calculation formula
The quality of the aluminum plate = aluminum plate thickness * width * length * density
2. Density of aluminum plate
The density of pure aluminum plate is 2.7×10kg/m or 2.7g/cm;
Other series range from 2.58 to 2.9 depending on the alloy. For details, please refer to the aluminum plate density table.
3.Examples
Assume that the volume V of an aluminum plate with a length of 72.8mm, a width of 38.0mm, and a thickness of 3.0mm is:
V=72.8*38.0*3.0(mm)=8299.20(mm)=8.29920(cm)
The mass of the aluminum plate: 8.29920*2.71g=22.4908g=0.0225kg
4.Explanation
If you perform theoretical calculations strictly in accordance with the table, the results obtained are often lighter than the actual weight, because the actual thickness and size of the pure aluminum plate are not that accurate. In addition, the aluminum plate coating will also affect the actual weighing. The theoretical calculation only provides a rough reference. .
2. Calculation of the size of pure aluminum plate surface material:
Based on the structural divisions and the location of the calculation object in the building, we select less favorable surface materials for calculation. The surface material adopts the support form of four-sided support.
The maximum grid size of the surface material is 4.5 (long side Ba) × 0.6 (short side Bb) meters.
The pure aluminum plate surface material is made of 3mm single-piece aluminum alloy plate. The calculated elevation of the surface material is 20m, and the ground roughness is Category C. The surface material here mainly bears the gravity load, wind load and earthquake load acting on the panel.
Mechanical model and basic assumptions:
As a directly stressed member, the surface material mainly bears the load in the normal direction of the structure plane. Since the stiffness of the surface material in the plane is relatively large, when the strength and stiffness of the surface material are calculated here, the surface material in the plane is not considered. The effect under internal load, and as a plate and shell structure, the effect under normal load is considered.
The normal load acting on the surface material can be simplified to the equivalent uniform surface load.
Material parameters of pure aluminum plate:
3003H44 aluminum alloy surface material adopts
Young's modulus of elasticity
E＝0.7×105 N/mm2
Poisson's ratio
ν＝0.33
Strength design value
fg= 81 N/mm2
