Zenpipe

Application

Process engineering contractors and fabricators; Oil and Gas; Nuclear and petrochemical industries.

Introduction

Zentech's long involvement with many of the major computer programs for pipe stress analysis has generated extensive knowledge of the piping engineer's requirements. This experience has resulted in Zenpipe, a pipe stress analysis system tailored to the engineer's specific needs, with emphasis on ease-of-use, speed of learning and simple computer access.

Zenpipe may be used to calculate the static and dynamic performance of a piping system when subjected to a variety of loading conditions. Furthermore, it generates a full code compliance report for the ANSI codes B31.1, B31.3, B31.4 and B31.8 as well as the ASME III DIVISION 1 Class 2 code.

The program utilizes the stiffness method to simultaneously analyse complex piping systems for any combination of multiple thermal, pressure, uniform, support displacement and concentrated force/moment loadings. A weight analysis may also be performed. Any of these static load combinations can be intermixed with a shock loading which may be determined by response spectrum analysis, response history by mode superpostion, or response history by direct integration. Stresses for each loading or loading combination are calculated in accordance with the specified code and may be checked for code compliance at the user's option.

Major capabilities

• Static analysis
  • simultaneous multiple thermal loadings
  • simultaneous multiple pressure loadings
  • simultaneous multiple uniform loads
  • simultaneous multiple displacement sets
  • cold pull and push
  • concentrated forces/moments
  • any combination of the above.
• Dynamic analysis
  • response spectrum analysis with simultaneous or independent application of global shock components and direct SRSS or closely spaced modal response summation
  • response history analysis by mode superposition or direct integration.
• Combination of static and dynamic loads
• Hanger design
• Code Stress compliance for:
  • ANSI B31.1, B31.3, B31.4, B31.8
  • ASME III NC/ND (1980).

Special features

• plotting of pipe run and deflected shape
• completely free format English-orientated input language
• alphanumeric or automatic point naming
• automatic modelling of base ells
• automatic mass lumping for dynamic analysis
• complete geometry checking capability
• imperial or metric units
• inclusion of Support Structure
• flexible heading and job description capability
• automatic hanger design
• one-way constraints
• guides
• expansion joints
• limit stops
• snubbers
• fully indexed output reports.

Reports

The user may include or exclude any of the following reports:

• input echo
• printer plot
• edited data tables including program supplied data
• hanger selections
• forces and moments on supports
• global forces and moments
• displacements and rotations
• internal member forces and stresses
• frequencies
• mode shapes
• stress compliance report.

Availability

Zenpipe is currently available for in-house use by Zentech personnel only.

Consultancy

Zentech offers a comprehensive structural analysis service. Zenpipe is one of several products available as part of this service.