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Analysis and Design Capabilities ANALYSIS & DESIGN CAPABILITIES CAESAR II incorporates a robust static solver, employing both the Choleski or LDLT methods as appropriate. The static solvers are designed to iterate to a converged solution, modifying the global stiffness matrix as the status of non-linear restraints change. Once the static displacement solution is available, element forces and moments are computed, followed by the element stress computation according to any of the 26 built in piping codes. In addition to the standard boundary conditions (restraints and displacements), the user may specify either WRC-297 or PD5500 vessel nozzles or API-650 tank nozzles. The flexibilities of these nozzles are computed according the respective document, and inserted into the model at the referenced node point. If you have your own calculated flexibilities, you can specify all six degrees of freedom at any point in the system. Structural steel models can be incorporated into the piping models, or solved as stand alone models. Buried pipe and jacketed pipe models can be analyzed also, just as easily. The dynamics solutions include natural frequencies, harmonics, earthquake spectra, force spectra, and time history. Once the dynamic solution has been obtained, the animation module can be used to show the natural modes of vibration, the harmonic response, or the motion in the time domain. Auxiliary modules are provided to determine the acceptability of the piping forces and moments on the boundary elements of the model. The Equipment module includes checks for NEMA-SM23, API-610, API-661, API-560, and the HEI CAESAR II performs stress computations on pipe elements according to various piping codes. Currently the piping codes incorporated into CAESAR II are:
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