what is solidworks ? SolidWorks is a popular 3D computer-aided design (CAD) software that is used for creating and designing complex models and assemblies in mechanical engineering, product design, and other industries. It is developed by Dassault Systèmes, a French software company that also owns other popular software such as CATIA and SIMULIA. SolidWorks provides a range of tools and features for creating 3D models, such as sketching, surface modeling, solid modeling, sheet metal design, and assembly modeling. It allows users to simulate and analyze the performance of their designs before manufacturing, including motion analysis, finite element analysis (FEA), and computational fluid dynamics (CFD). It also supports collaboration and sharing of designs with other users through various formats such as STEP, IGES, and STL. SolidWorks is known for its user-friendly interface and intuitive design, which makes it easy for beginners to learn and use. It is widely used in industries such a...
Simple Stresses in Machine Parts :
Compressive Stress and Strain :
Compressive Stress -
Where E is a constant of proportionality , which is known as young modulus or Modulus of elasticity . The unit of modulus of elasticity is GPa .
The machine parts are subjected to a various forces which is due to energy transmitted , weight of machine , frictional resistance , Inertia of reciprocating parts , change of temperature and lack of balance of moving parts .
Load :
Load is the external force acting upon a machine part .
- Dead or steady load
- Live or variable load
- Suddenly applied or Shock loads
- Impact load
Stress :
When external forces or loads act on a body , the internal stress resist the external forces . This internal force per unit area at section is known as unit stress or stress . Stress is denoted as ( sigma ) .The unit of stress is N/mm2 or Pascal ( Pa ) .
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Where -
P = Load acting on body .
A = Cross Section area .
Strain :
The ratio of change in length and original length of body is known as Strain . Strain is deformation of body when loads act on a body . Strain is denoted as ( epsilon ) . The unit of strain is unitless .
Where -
Tensile Stress and Strain :
Two equal and opposite axial pull ( tensile load ) is acting on a body then stress is known as tensile Stress . The ratio of increasing in length to original length is known as tensile strain .
Tensile Stress -
Tensile Strain -
Compressive Stress and Strain :
Two equal and opposite axial pushes ( Compressive load ) is acting on a body then stress is known as compressive Stress . The ratio of decreasing in length to original length is known as compressive strain .
Compressive Stress -
Compressive Strain -
Young's Modulus or Modulus of Elasticity :
According to Hooke's law , stress is directly proportional to Strain .
Where E is a constant of proportionality , which is known as young modulus or Modulus of elasticity . The unit of modulus of elasticity is GPa .
Shear Stresses in Machine Parts :
Two equal and opposite forces is acting on tangential section then stress is known as Shear Stress . Due to this stress , strain is called Shear Strain . Shear stress is denoted as tau and shear strain is denoted as phi .
Single Shearing , Rivet joining
Double Shearing , Rivet Joint
Shear Modulus or Modulus of Rigidity :
Experimentally found that the shear stress is directly proportional to shear strain .
Where C is constant of proportionality , which is known as Modulus of Rigidity . It is denoted as C , N , G .
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