4-Module Noisy Data Bundle Special (Save 20%)

View this 7 minute overview video describing the 4 bundle training classes

Includes the 4 modules listed below

1. DSP Essentials (Oct 5, 6, 12, 13, 2027)
2. Understanding Shock Spectra and PVSS Analysis (Oct 19, 20, 26, 27, 2027)
3. Working With Noisy Transient Dynamic Simulations (Nov 3, 4, 5, 2027)
4. Working with Physical Measurements from Severe Mechanical Shock & More (Nov 9, 10, 16, 17, 2027)

DSP Essentials

This training module is the foundational class of the training series Analyzing Noisy Data From Physical Tests & Transient FEA. The module covers the key aspects of DPS (Digital Signal Processing) fundamentals, explained with terminology and examples applicable to Mechanical Engineers working in the field of linear and nonlinear structural mechanics, or similar. The concepts taught in the training apply to data obtained from physical testing, numerical simulation models, or a combination of both.

Course Objectives & Benefits

• Learn all about the evils of aliasing and how to collect digital data properly, avoiding aliasing.
• Perform spectrum analysis to interpret frequency content via DFS (so-called FFT) and other approaches.
• Filter data with confidence to remove high frequency noise or low frequency drifting.
• Learn why and how to properly upsample or decimate data.
• Learn about filter-induced distortions, including how to identify them and techniques to avoid them.
• Experience “pushing the same buttons” in different software can yield very different results (and the reasons this occurs).
• Get general-purpose strategies for applying DSP to FEA results & physical test data.

Course Outline

• Introduction & Motivation
• Explore cases from a large range of examples that demonstrate the critical need to handle noisy/messy data properly.
• DSP Fundamentals
• Time-Domain & Frequency-Domain
• Understanding frequency content
• Filtering
• General concept of digital filters (lowpass, highpass, and more)
• Impulse response and filter signatures
• Filter-induced distortions and minimizing their effects
• Data Collection From Physical Testing & Requesting Simulation Output
• Sampling, resampling, and avoiding aliasing
• Antialias filtering
• DSP requires constant sampling
• DSP Using Various Software (Your Results May Vary!)
• Learn why different software packages can yield strange spectrum and filtering results.
• Strategies For Applying DSP in the Real World
• General-purpose work-flows to process and explore frequency-rich data.
• Conclusions
• Workshops
• The class provides several fully-solved examples including their raw data files that the attendees can explore to further solidify their learnings.

Course Duration

• Four sessions, 3 hours each (12 hours total)

Prerequisites

• No previous training in digital signal processing is needed. Previous exposure to working with noisy/messy data is beneficial, but not required.

Training Delivery Options

• Public Web Training via Zoom
• Cost: $1152
• Request a customized course for your company/organization.
• Can be delivered LIVE over the web or in-person at your site.
• You can customize content, including having use utilize one or more of YOUR datasets in workshop examples.
• Click here to request a quote.

Understanding Shock Spectra and PVSS Analysis

This training module focuses on Shock Response Spectra (SRS), its background and applications. SRS analysis, especially via Pseudo Velocity Shock Spectra (PVSS), is a powerful approach to characterize shock severity of transient acceleration data. The module clearly explains the basis and limitations of SRS analysis, and then it explores numerous applications of its use to acceleration data derived from physical testing and transient FEA simulations.

Course Objectives & Benefits

• Learn what SRS analysis is really computing, its limitations, and how to properly interpret a shock spectrum
• Explore the added understanding that PVSS analysis brings, especially when presented on a four coordinate plot
• Understand the importance of having some kind of estimate of a payload’s natural frequencies when evaluating an SRS
• Learn how to convert simple shock specs (1000·G, 0.5·msec) into SRS and PVSS spectra
• Learn how to estimate stress from a PVSS and payload natural frequency
• Learn how to use SRS calculations to make fast estimates of mitigating shock severity via a shock isolator
• Learn how to turn transient FEA acceleration data into shock specs and shock screening SRS targets

Course Outline

• Shock Response Spectrum (SRS) – What is it?
• Various Forms of SRS
• Additional Details on Accel SRS & PVSS
• Estimating Shock Severity & Payload Stresses from Shock Response Analyses
• Converting Peak Accel and Time Duration Shock Specs into SRS
• Example of Applying SRS Analysis, Including Estimating Shock Mitigation Effects of an Ideal Shock Isolator
• How SRS Analysis can be Distorted by Aliasing
• How SRS Can Be Over-Estimated by Insufficiently Damped Transient Simulations
• Making a Quick Estimate of Dominant Natural Frequencies in a Component
• Creating Shock Screening Protocols
• Highlights from Exemplar Studies of Shock and PVSS
• Additional Comments on Uses of SRS
• Workshops
• The class provides several fully-solved examples including their raw data files that the attendees can explore to further solidify their learnings.

Course Duration

• Three sessions, 3 hours each (9 hours total)

Prerequisites

• Some previous exposure to shock/impact data is beneficial, but not required
• Basic understanding of digital signal processing similar to that taught in DSP Essentials module is recommended

Training Delivery Options

• Public Web Training via Zoom
• Cost: $1056
• Request a customized course for your company/organization.
• Can be delivered LIVE over the web or in-person at your site.
• You can customize content, including having use utilize one or more of YOUR datasets in workshop examples.
• Click here to request a quote.

Working With Noisy Transient Dynamic Simulation Models

This training module focuses on working with noisy transient dynamic simulations from codes like Abaqus, LS-Dyna, and others. The course concentrates on how proper use of DSP (Digital Signal Processing) across many aspects of the simulation task is critical to obtaining accurate results from these frequency-rich models.

Course Objectives & Benefits

• Learn how to properly request output from simulations to avoid the many disasters that aliasing creates
• Understand the pros/cons of driving transient models with different kinds of transient inputs (acceleration, displacement, forces, etc.)
• Explore how the proper use of DSP improves the accuracy, efficiency, and usefulness of explicit dynamics simulations (Abaqus, LS-Dyna, Radioss...) including impact, shock, buckling, failure, penetration, sliding contact, and quasi-static analyses
• Learn about sources that cause distortions in transient simulations, and then how to potentially remove them
• Obtain better correlations between physical tests and FEA simulations through the proper use of DSP, as applied to both FEA and physical test data

Course Outline

• Typical Issues with Transient-Dynamic Models
• Exploring Detailed Examples:
• Impact of a Consumer Electronic Device (Ball-Lens Impact)
• Oblique Impact of a Falling Plate
• Applying DSP on Mises and Principal Values
• Damping & Ringing in Nonlinear Transient Dynamic Simulations
• Shocking an Aluminum Plate
• Container Impact Study
• Integrating and Differentiating Data
• Attempting to Cheat Aliasing Via the Nature of Integrals & Derivatives
• Driving Transient Models with Tabular Data
• Additional Comments on Acceleration Data
• Conclusions
• Workshops
• The class provides several fully-solved examples including their raw data files that the attendees can explore to further solidify their learnings.

Course Duration

• Three sessions, 3 hours each (9 hours total)

Prerequisites

• Some previous exposure to transient FEA simulations is beneficial, but not required
• Basic understanding of digital signal processing similar to that taught in DSP Essentials module is recommended

Training Delivery Options

• Public Web Training via Zoom
• Cost: $864
• Request a customized course for your company/organization.
• Can be delivered LIVE over the web or in-person at your site.
• You can customize content, including having use utilize one or more of YOUR datasets in workshop examples.
• Click here to request a quote.

Working with Physical Measurements from Severe Mechanical Shock & More

This training module focuses on the acquisition of transient physical measurements using accelerometers, strain gauges, and other commonly used sensors as well as working with the typically noisy data generated from these measurements. The training also covers the validation and comparison of physical test data with transient numerical simulation results. This training is recommended for those taking physical measurement data as well as those who receive or work with physical measurement/test data (that means FEA users too!).

Please note, the training concentrates on many aspects related to making good and accurate transient measurements, and then how the proper use of DSP techniques is often required to obtain improved results and correlation between physical tests and numerical simulations. The training does not discuss how to tune simulations to obtain improved correlations.

Course Objectives & Benefits

• Get BOTH the measurement/test engineer and simulation user on the same page!
• Learn about the key aspects of making a good transient measurement.
• Explore sources that cause distortions in physical tests, and then how to potentially remove them.
• Learn about the challenges of taking accurate transient accelerometer and strain gage measurements, and techniques to improve both the raw data as well as its down-stream post-processing.
• Experience how to use DFS to identify the bandwidth of the noise-floor in measurements and then apply appropriate filtering to significantly improve the noise-floor.
• Learn how to obtain better correlations between physical tests and FEA simulations.

Course Outline

• General Comments on Physical Measurements
• Data Acquisition System Requirements for Shock Measurements & Other Transient Events
• Physical Measurements with Accelerometers
• The Importance of Sensor Mounting & Cabling
• Some Interesting Tests with Accelerometers and Angular-Rate Sensors
• Accelerometer Issues – Zero Shifting and More
• Post-Processing of a Typical Shock Measurement
• Physical Measurements with Other Sensors (Strain Gages, Load Cells …)
• Measure with Multiple Approaches Using Different “Physics” Whenever Possible
• Comparing Models to Physical Measurements
• Processing Simulation Data with Various DSP Tools Commonly Used by Experimentalists and Test Engineers
• Final Comments & FAQs
• Workshops
• The class provides several fully-solved examples including their raw data files that the attendees can explore to further solidify their learnings.

Course Duration

• Four sessions, 3 hours each (12 hours total)

Prerequisites

• Some previous exposure to transient physical test measurements is beneficial, but not required.
• Basic understanding of digital signal processing similar to that taught in DSP Essentials module is recommended.

Training Delivery Options

• Public Web Training via Zoom
• Cost: $1,152
• Request a customized course for your company/organization.
• Can be delivered LIVE over the web or in-person at your site.
• You can customize content, including having use utilize one or more of YOUR datasets in workshop examples.
• Click here to request a quote.