## **Factor of sefty** - 'factor of sefty it is defined as "the ratio of the maximum stress to the working stress. '

Factor of sefty is divided by stress that is maximum stree and working stress .

What is factor of sefty and their uses , calculation examples with pdf |

### The factor of sefty and it's significance

● we know that " deference in theoretical and practical condition in which the mechanical elements are working."

That is why it's nessessary to avoid any accident in working condition.

● factor of sefty it helps to provide a design idea over the theoretical Design for avoid any uncertainty or any attachments in the designing process.

● now the question is what kind of uncertainty " uncertainty will be any kind of elements or componats in design process consists wedding, reverting ( assembling operation, material strength and it's calculation.

## Formula for calculation factors of sefty

Factor of sefty = maximum stress

______________________

Working stress .

## Factor of sefty for other material

**Factor of sefty for belittle material -**

**For belittle material : the factor of sefty for belittle material is ratio of " ultimate stress per unit working or Design stress .**

**Factor of sefty for ductile material -**

**Factor of sefty for ductile material is the ratio of " yield point stress per unit working stress or Design stress .**

**Value of the factor of sefty depend upon**

**- material of components**

If the different material could be different magnitude of factor of sefty . It is not remain same of any other material so here we can say magnitude of FOS is different when material of components is different.

**- index of accuracy In force calculation**

The degree of accuracy is varying degrees in time with force analysis. So we can say that when force analysis done it varying the the magnitude of FOS.

## Reliability of components

When we fix the magnitude of FOS it is necessary to check they componats are reliable or not sufficient reliable. It also important in value of factor of sefty.

## - load type

**There is the two main load**

**◆ static**

**◆ and dynamic load**

static load means the load of structure which load of structure itself other load not include.

Dynamic load is the moving load further upward and down word direction.

The magnitude of FOS is varying with type of load .

- Effects failure of FOS

**Loss due to time**

**Property loss**

**Life of structure.**

**Table for factor of sefty for other componats.**

**For more details please comment.**

**Thank you for reading till the here.**

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