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- Description
- Specifications
The FEM - Earthquake is used to perform dynamic analysis of geotechnical structures loaded by ground motion. It either accepts user-defined accelerograms or generates ground motion histories compatible with the specified response spectrum. The program outputs the evolution of displacements, stresses, internal forces and other mechanical quantities and summarizes their maximum values. It also performs modal analysis to acquire eigenfrequencies and eigenmodes of the system for setting the material damping.
Earthquake is an extension module of the FEM program for the analysis of general geotechnical problems.
Main Features
- Material models:
- Linear elastic model
- Mohr-Coulomb model
- Modified Mohr-Coulomb model
- Drucker-Prager model
- Material damping
- Damping ratio
- Automatically computed or user defined Rayleigh damping coefficients
- Accelerograms
- User defined acceleration history
- Automatically generated accelerograms compatible with Eurocode 8 response
- Boundary conditions
- Fixed boundary conditions on bottom boundary for models truncated at soft soil/stiff rock interface
- Quiet (non-reflective) boundary conditions on bottom boundary for models truncated within soil/rock layer
- Radiation and traction boundary conditions on lateral boundaries to properly address far-field conditions
- Modal analysis
- Eigenfrequencies and eigenmodes
- Modal participation factors and modal effective mass to identify eigenmodes participation in horizontal and vertical direction
- Run earthquake analysis in any construction stage
Explanation of Product Terms
Hardware Key (Hardlock/HW Key): Hardlock is a piece of hardware (i.e. USB or dongle) used to eliminate software piracy. Therefore, the software only runs on a computer with connected hardlock. Licenses locked to hardware key are not limited to one computer, but to any computer with connected hardlock. For example, it allows the users to run programs on an office computer or on a notebook out of the office. For larger companies we offer Network hardlocks, which are attached to one computer on a network allowing product usage on other computers connected to the same network.
Software Key (SW Key): Software key is a unique code (Token) that is installed on a user’s computer, which works in a similar way like a hardlock. This key is bound to the hardware of a given computer. The first installation on the client’s computer is done using the software key Token. The software key is bound to the hardware parameters of a given computer on which the key is installed. If these parameters are changed the software cannot be launched until the issue is resolved by reporting the Hardware Changes (to restore the full functionality).
Token: Token is a onetime use unique code to install the software key on the client’s computer. For example, “1234_5_ABCDEFGHXYZABCLO” (1234 is user number, 5 is key sequence number)
Local Licence (Software Key): If you buy a local licence with a software key, the software can be installed and used on one computer only. If you buy a new computer, the key can be transferred (only if you have the commercial version of software). The software key is sent by email within working hours. Individual programs can be installed using one or more local keys according to individual user needs.
Local Licence (Hardware Key): If you buy a local licence with a hardlock, you can install the programs on an arbitrary number of computers, however the programs will only work on the computer to which the hardlock is connected. Individual programs can be installed using one or more local keys according to individual user needs.
Network Licence (Hardware Key): Our network licences are only distributed with a hardlock. If you buy a network licence, you may use the software on more computers in the network. The maximum number of users that can work with the software at once is given by the number of purchased licences (i.e Max. 10 users or Max. 50 users). In order to run the application, the appropriate network hardlock has to be connected to a computer in the network.
Software Maintenance: Fine Maintenance subscribers get all updates and upgrades (new Editions) for free. Software Maintenance is available as an annual subscription for the amount of 15% of the software program and can be purchased in conjunction with your Local or Network licence. Please contact ETIA if you already have a Local/Network licence and would like to purchase maintenance separately.
