Piping Stress Analysis (PSA Group)
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Piping & Pipeline Stress Analysis
Piping Stress Analysis Training
CAESAR II Static Training
CAESAR II Dynamic Training
Special Support Design by FEA
Special Item Design

E-mail: ir.psa.co@gmail.com
Tel: (+98)912 816 2070
@Akbar_Daneshvar
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2. Now click on the System button on the right side as shown in the above picture.
3. After that page up button on top and you will get the following screen.
4. Now click on the back up file as shown in the above figure and choose your file. You must remember the file name to restore the same. Choose the latest file as per date and time to get the most updated information.
5. The Caesar file will be restored for you. Now save that file to the location where you want that to be and make the load cases as per your requirement for analysis.
Hope this helps you to resolve few of your problems and save man hour.
Viscoelastic dampers
Application:

Vibrations can be generated inside a system by mechanical or hydrodynamic processes, or may result from external sources such as wind loads, traffic vibrations, or earthquakes. Excessive vibrations can cause serious damage to pipe systems. Protecting them requires special components that do not restrain thermal displacements of the piping system. Viscoelastic dampers have proved in practice to offer reliable protection for pipe systems and installations. In particular, vibrations caused by sudden peak loads can be reduced to an acceptable level by such dampers.
Scope of performance:
Load: 2.5 kN to 100kN
Frequency range: up to 35 Hz
Temperature range: +20 to +80°C and -10 to +40°C
Travel range: up to 50 mm
Mounting examples
Pump Casing Structural Analysis
An example of a pump casing analysis involved a horizontal pump in a critical slurry service. In this example, the analysis focused on evaluating the stress and deflection of a casing when operating under full pressure with various specified nozzle loads. The model included the suction/ discharge volutes, nuts and bolts, and back plate (Figure 1). To determine the structural integrity of the casing design under internal pressure and nozzle loads, a detailed finite element analysis was conducted with the model including the slurry pump casing, the respective hub disc cover (back plate), nuts and bolts, and suction/ discharge volute provided by the customer. The solid model assembly of all the parts was analyzed using Solidworks and ANSYS.
Figure 1. Plot of finite element mesh of the pump assembly. The mesh is composed of 1 million elements.
Nonlinear contact analyses were performed with the hub disc cover and the suction/ discharge scrolls bolted to the casing. The peak von-Mises stress of the assembly, and the peak stress locations, were determined and compared to stress criteria per ASME B&PV Code Section VIII, Division 2. Using stress linearization techniques across the pump casing at this peak stress location, the membrane and membrane-plus-bending stresses were below their respective allowable limits. The local peak stresses were determined to be acceptable.
Von-Mises stresses (psi) of the pump assembly, with the specified pressure and nozzle loads applied, are compared to ASME Sect VIII, Div 2 operating limits.
Total deformation of the pump assembly under operating pressure and nozzle loads.