How to calculate the failure load of aluminum parts for power fittings

Failure load f = area of the compression surface * compressive strength.

When the standard test block is 15x15x15cm cube, the compressive strength is equal to the failure load divided by the area of the specimen in MPa. When using non-standard test blocks, the conversion coefficient should be multiplied, respectively: the cube specimen with a side length of 10cm is 0

95, the cube specimen with a side length of 20 cm is.

For example, the strength of the 15cm specimen is the load (1000kn), the area is 225cm2, and the strength is.

Failure load: Generally refers to the failure load of parts or materials, in which the original structure of the material or parts is changed, that is, the material yields.

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You'd better explain to her what you've been doing for the past two weeks, and she'll take care of you.

The nominal failure load of the wedge tension clamp is.

There is a difference in the grip strength of wires with different cross-sections:

185 square millimeters wire cross-section grip force, 240 square mm wire cross-section grip force, 300 square mm wire cross-section grip force.

Tensile strength is the critical value of the transition from uniform plastic deformation to local concentrated plastic deformation, and it is also the maximum bearing capacity of the metal under static tensile conditions. Tensile strength is the resistance to the maximum uniform plastic deformation of the material, the deformation of the tensile specimen is uniform before the maximum tensile stress, but after exceeding, the metal begins to neck, that is, concentrated deformation; For brittle materials with no (or small) uniform plastic deformation, it reflects the material's resistance to breaking, and the so-called rated load is the maximum allowable load of the equipment. In general, this value is slightly lower than the design load.

The purpose is to ensure the safe operation of the equipment.

Failure load f = area of compression surface * compressive strength When the standard test block is 15x15x15cm cube, the compressive strength is equal to the failure load divided by the area of the specimen in MPa. When using non-standard test blocks, multiply by the conversion factor, respectively.

It means that lines under ten squares are multiplied by 5, and lines above one hundred squares are multiplied by 2

Twenty-five times 4 times thirty-five times 3 times above

Copper wire is calculated according to the upper level of the wire diameter, such as the square calculation.

This is the factory calculation mantra. It worked.

Estimation formula: 2.5 times 9, subtract one straight up and go.

Thirty-five times 3.5, double in a group minus five.

The conditions have been changed and converted, and the high-temperature nine-fold copper has been upgraded.

The number of pipe roots is two, three, four, eight, seven and six folds full of load current.

There are five types of electrical fittings. Overhang, tension, connection, splicing, protection. Among them, there are aluminum parts, iron parts. Iron parts are usually forged, plates are usually flame cut, aluminum parts are mostly poured, and they are also processed with profiles.

Attached: Classification of electrical fittings.

1. According to the function and structure, it can be divided into overhang wire clamps, tension wire clamps, connecting fittings, connecting fittings, protection fittings, equipment wire clamps, T-shaped wire clamps, Minqian bus fittings, pull wire fittings and other categories; According to the use, it can be used as line fittings and substation fittings.

2. According to the power fittings product unit, it is divided into malleable cast iron, forging, aluminum, copper and aluminum and cast iron, a total of four units.

3. It can also be divided into national standard and non-national standard.

If there is no physical object, just design the size, and it is convenient and accurate to draw and calculate it with 3D software such as Pro E.

We have power fittings pre-twisted wire, which can weigh you.