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Altair SimSolid Dynamics Training Guide
Altair SimSolid is a next generation, high capacity, structural FEA product. It uses new computational methods which operate on original, unsimplified CAD geometry and does not need a mesh. This training guide provides details on how to perform dynamic analysis in SimSolid including modal frequency response, transient response and random response analysis. For general overview, please see SimSolid Fast Start Training Guide.

Data Driven Models for HVAC Load Prediction
Consumers electric bills typically have two primary components: energy charges and demand charges. Demand charges are significantly costlier (10 times on average) than normal energy charges because of the inherent production cost to maintain the demand over a certain limit. This presentation proposes a model which can forecast upcoming demand charge events which in turn can help the consumers in optimizing their energy usages and hence help them avoid going to demand charge band.

Fatigue Life from Sine-on-Random Excitation
Fatigue life prediction of structures whose natural frequencies lie near the frequencies of the input loading requires the stress results from dynamic analyses. These analyses can be performed in either the time or the frequency domains depending on the nature or the loading. This presentation will outline the approaches available for fatigue life prediction using Altair OptiStruct and APA product, nCode DesignLife for both time and frequency based dynamic analyses. The strengths, weaknesses and assumptions of each approach will be presented, along with typical applications enabling the user to select the proper technique for their particular use case.

Random Vibration Procedure and Best Practices
In order to evaluate if a design is robust and meets design margins, engineers use a variety of analytical tools. Often a product’s duty cycle is not perfectly characterized but the statistics of a lifetime of excitation are known.
These excitations can cause fatigue when system level dynamics are excited. It is very important to understand how a system responds to these excitations and how natural frequencies interact with each other.
Power spectral density (PSD) analysis, more commonly known as random response analysis, is used to determine stresses and strains in a system that is subjected to random excitations.

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