Fixed structures

This example provides a step-by-step guide for performing a Spectral Fatigue Analysis based on static analysis using the Framework program. The model is created in GeniE, with hydrodynamic calculations handled by Wajac, pile-soil interaction assessed using Splice, and static analysis performed by Sestra.

Sesam Manager is used to organize the analysis workflow. Fatigue damage and fatigue life calculations are carried out in Framework, which will be used interactively in this example to help first-time users familiarize themselves with its commands.

For optimal performance, it is recommended to use the latest versions of the Sesam programs:

• GeniE 8.12.3
• Framework 4.5.0
• Sestra 10.19.0
• Sesam Manager 6.7.0
• Splice 8.2.1
• Wajac 7.13.0

This example demonstrates how to extract the soil linearized springs along the pile and how to perform linear analysis with them. It is recommended to use the latest version of GeniE and Splice.

This example includes:

• Executing pile soil analysis to generate SPLICE_LINEARISEDPILE_T1.FEM
• Importing linearized springs along pile length into model
• Executing eigenvalue analysis
• Executing linear static analysis
• Possible issues and limitations

The ZIP file contains the starting and finished GeniE model.

This example provides a step-by-step guide for performing a Spectral Fatigue Analysis with Equivalent Static Load (ESL) approach using the Framework program. The model is created in GeniE, with hydrodynamic calculations handled by Wajac, pile-soil interaction assessed using Splice, and dynamic analysis performed by Sestra.

Sesam Manager is used to organize the analysis workflow. Fatigue damage and fatigue life calculations are carried out in Framework, which will be used interactively in this example to help first-time users familiarize themselves with its commands.

For optimal performance, it is recommended to use the latest versions of the Sesam programs:

• GeniE 8.12.3
• Framework 4.5.0
• Sestra 10.19.0
• Sesam Manager 6.7.0
• Splice 8.2.1
• Wajac 7.13.0

USFOS is an advanced nonlinear finite element software designed for structural analysis, including blast simulations. This example demonstrates a blast analysis using USFOS, applying a 1-bar explosion load to a simple module structure. The workflow integrates the GNX model with GeniE, where a static analysis is performed before exporting the processed data to USFOS for detailed blast evaluation.

The process begins with importing the GNX model into GeniE, preparing the structure for analysis. A static analysis is then conducted to establish the baseline response. Once complete, the model is transferred to USFOS for a nonlinear blast analysis. The blast simulation utilizes full dynamic analysis to accurately assess the structural response to explosion forces.

This example will help you to understand the step-by-step procedures for boat impact analysis. GeniE is used to prepare and model the structure, while USFOS performs advanced non-linear analysis to simulate the impact and predict the progressive collapse behavior.

This approach helps engineers assess structural integrity, identify potential failure points, and design modifications to ensure safety and durability under extreme scenarios.

This example is about earthquake response spectrum analysis and member/joint code checking in GeniE. It is recommended to use GeniE 8.12-2 and Sestra 10.19-00.

This example includes:

• Running static analysis to analyze the structure for static loads, to generate Static_R1.SIN
• Running eigenvalue analysis twice:
  • First run with the option "Mass Matrix", to generate M1.SIF
  • Second run without the option "Mass Matrix", to generate Eigen_R1.SIN
• Running earthquake analysis to generate earthquake load case and combined with static load cases
• Performing member and joint code checking with the earthquake load combinations

All above steps are executed in the single GeniE workspace. The ZIP file contains the starting and finished GeniE model.

This workshop addresses how to use shell fatigue, as compared to beam fatigue, to achieve more accurate calculated fatigue life by use of FE shell methodology. It includes:

• Eigenvalue and dynamic analyses of a beam model
• Beam fatigue analysis
• Conversion of tubular joints to shell model and subsequent eigenvalue and dynamic analyses
• Shell fatigue of critical part around brace/chord connections.

It is assumed that you are familiar with the user interfaces and functionalities of Sesam. The focus of this workshop is the workflow and not details of how to run Sesam.

Import the ZIP file into a new Sesam Manager job. The attached description explains all the steps to do the workshop.

This example involves using Sesam Manager, GeniE, Wajac, Sestra, Splice, Framework, Stofat and some auxiliary programs. It includes several analyses of a 4 legged jacket:

• Static (ULS) analysis of jacket fixed at sea floor
• Free vibration (eigenvalue) analysis of fixed jacket
• Static (ULS) analysis of jacket with piles
• Linearising piles and soil replacing them by linear springs
• Free vibration (eigenvalue) analysis of jacket with linear spring support
• Deterministic fatigue analysis
• Spectral fatigue analysis based on static structural analysis
• Spectral fatigue analysis based on dynamic structural analysis
• Spectral fatigue analysis based on equivalent static loads structural analysis
• Stochastic fatigue analysis based on dynamic structural analysis (pure beam model)
• Stochastic fatigue analysis based on dynamic structural analysis of tubular joints converted to shell models
• Earthquake analysis
• Transportation analysis with pre-stress

Import the ZIP file into a new Sesam Manager job. A document explaining the analyses is included. Select the job and go to Attachments (tab to lower right in Sesam Manager) to find this and other files related to the example.

This example involves using GeniE, Wajac, Sestra and Splice.

Unzip the downloaded example file and Import the Model_Start.gnx into a new GeniE workspace. This example includes:

• Running wave pile soil analysis
• Creating capacity model
• Performing code check for beam and joint
• Create a report for code check
• Redesign

A document explaining the procedure and step by step instruction is included.

This example is about Eigenvalue Analysis for a jacket structure using GeniE and Sestra. It is recommended to use the latest version of GeniE and Sestra for this task.

This example shows how to use Usfos to do a pushover collapse analysis of a jacket. The jacket is subjected to gravity and buoyancy plus a wave that is scaled (unrealistically) to provoke a pushover collapse. The input to GeniE to create the model and run analysis activities is provided. Manual steps are taken to export the model from GeniE to Usfos and to do some minor adjustments to the Usfos input. A document attached to the job explains how to do this.

This example shows how to do the three analyses types: linearized buckling, P-delta and stress stiffening. The example used to demonstrate the three analyses is an ocean frame structure (jacket). It is run as a job in Sesam Manager. Create a new job in Sesam Manager and import the ZIP file to run the example. Read the PDF document attached to the job.

This example shows how to do the three analyses types: linearized buckling, P-delta and stress stiffening. The example used to demonstrate the three analyses is a jackup leg. It is run as a job in Sesam Manager. Create a new job in Sesam Manager and import the ZIP file to run the example. Read the PDF document attached to the job.

This example involves using Sesam Manager, GeniE, Wajac, Sestra and Xtract. The example demonstrates how to do compute dynamic amplification factors (DAFs) for a slender structure subjected to wave loads. Import the ZIP file into a new Sesam Manager job.

This example involves using Sesam Manager, GeniE, Presel, Sestra, SestraGap and Xtract.

The example demonstrates how to run SestraGap to solve a contact-gap problem.

The model is a single jackup leg with a triangular prism illuding the jackup deck. The material density of the triangular prism is high so as to capture the deck mass. The edges of the prism are fixed for rotation about X and Y so as to achieve the S-shaped deformation forced by the deck. The leg bottom (three points) are fixed for the translations.

Import the ZIP file into a new job. A PDF file (JackUpLegWithGapContact.pdf) is attached and provides details on the analysis.

Note that GeniE version 8.3 offers simplified contact analysis which for many cases is adequate. Being fully controlled by GeniE this method is much simpler than the procedure of the present example. Go to a GeniE tutorial in advanced modelling and find an example of transportation analysis with contact problem to learn about contact analysis controlled by GeniE.

This example involves using Sesam Manager, GeniE, Sestra and Framework. Create a new job in Sesam Manager and import the ZIP file to run the example.

The example demonstrates how to run a so-called direct deterministic fatigue analysis of a structure. This is a fatigue analysis with manually specified oscillating loads. (As opposed to wave loads computed by Wajac.) An example of such load is rotating machinery (with eccentric mass).

The example is a simple tower subjected to acceleration fields, horizontal and rotational, all together 4 loading situations. Each loading situation is modelled by two loads representing the two extremes of the loading situation. (For rotating machinery two concentrated forces may be used, a positive force and a negative force representing the two extreme loading situations.)

This example demonstrates how to run an earthquake analysis within Sesam Manager.

The steps include:

• Export T1.FEM file and L1.FEM file used in static and eigenvalue analysis (GeniE, Wajac)
• Run static analysis, export results file (Sestra)
• Run eigenvalue analysis, export results file (Sestra)
• Merge results file (Prepost)
• Run earthquake analysis and perform code check (Framework)

Import the ZIP file into a new Sesam Manager job.

This example involves using Sesam Manager, GeniE, Wajac, Sestra and Framework. It includes wind fatigue analysis of a flare boom. Read the PDF document attached to the job.

This example involves using Sesam Manager, GeniE, Presel, Sestra 8.8 and Xtract. The example demonstrates how to create a matrix superelement which may be stored and used in later analyses. Import the ZIP file into a new Sesam Manager job. Read the PDF document attached to the job.

Note that this analysis is based on using Sestra 8.8. Sestra 10 cannot yet be used.

Note that GeniE version 8.12-03 offers the new feature to import an external matrix M1.SIF file directly into the GeniE workspace. The external matrix data can then be fully controlled by GeniE within the same superelement. This method is much simpler and more suitable in most cases compared to the procedure used in this example. Refer to the GeniE tutorial on advanced modeling and find the example titled “Substation and External Matrices” to learn about the new features for importing and managing external matrices within GeniE.