Contact DTB for reliable stress and structural analysis.
Structural analysis can determine cause and predict failure. Data is collected during complete structure and/or component testing, including simplified tensile strength tests.
Using Finite Element Analysis (FEA) techniques, our structural analysis engineers will help to dramatically reduce development time, while accelerating the design process. Modeling through Autodesk Inventor and FEA using ANSYS, our experienced engineers and structural analysts will verify findings against empirical test data, simplified models, and classical calculations to ensure accuracy. Our expert test engineers will verify findings in simulated settings in our laboratories to ensure product compliance. Validation and correlation of simulation with actual experimental measurements are made by using displacements from string pods and load measurements from load cells. The FEA simulation capabilities include but are not limited to the following:
In addition our experienced design team can provide services in the field of conceptual design, 3D solid modeling, assembly modeling and detailing and drafting for both onsite and offsite development.
Damage Tolerance Analysis — DTB has conducted significant structural test and analysis programs that involve damage tolerance principles and design. Crack growth coupon tests are used to determine the effect of loading frequency and environment on crack growth parameters.
For example, we can measure the crack growth rate of arresting gear during life extension tests. Then we would correlate the actual test results to analytical predictions of damage tolerance. This kind of hybrid testing and engineering work is a DTB hallmark.
DTB utilizes AFGROW and other software packages for analysis of structures for crack growth life. In conjunction with our stress analysis programs, we have experience in conducting damage tolerance analysis on aircraft antenna installations and equipment modifications.
If you already have parts catalog and provisioning capabilities, we can supplement your current staffing to handle workload surges using T1 or VPN connections and entering data directly into your parts authoring system. DTB Parts Specialists are highly experienced and skilled in the extraction of parts information from a multitude of sources including engineering data.
Some of the extended features provided by DTB:
Failure Prediction — Using strain life methods, stress life or load life methods, we can analyze your product, develop a loading spectrum and make fatigue life predictions for your system.The strain information can come from test data or from finite element modeling.We can support field strain gauges and load measurements to provide data for these analyses.
Reliable analysis for structures and components
Structural analysis is important because it can evaluate whether
a specific structural design will be able to withstand external and
internal stresses and forces expected for the design. Dayton T.
Brown has a proven track record in structural analysis, testing and
simulation. In many structural tests, subjects are strain gauged and
Structural analysis is performed and in some cases correlated with the testing output data. This produces an electronic virtual working model for future design development.
Our vibration analyists can determine stress points in your equipment and structures and, through analysis, can predict failures and recommend preventive measures and design improvements as required.
DTB’s Finite Element Analysis (FEA) method is used to model the structural dynamic characteristics of vibrations within a mechanical system, the understanding of which is important to any root-cause failure study involving excessive vibrations. Of significance is the use of vibration analysis and FEA techniques to evaluate the dynamic characteristics of machines and structures prior to fabrication.
Our experts reduce testing time by performing vibration analysis on complex systems.
Example: DTB runs quick simulations. Reliable analysis can be performed to fit within tight production and qualification schedules. Our technicians and experts are very experienced, our facilities are thoroughly equipped and we understand business.
We take pride in our ability to develop models that are only as complex as necessary to resolve the problem in a timely manner.
Parts – Assemblies – Structures
Our staff of stress analysts can help you. By using methods appropriate for your systems requirements, we can design, verify or diagnose structural issues and design a repair.
In fact, we have performed successful stress analysis on aerospace components and aircraft modifications by using both finite element stress analysis and classical hand analysis. Examples of our stress analysis experience include efforts to predict the fatigue life and damage tolerance capability of existing and redesigned arresting gear truss assemblies for carrier aircraft.
The purpose of this stress analysis program was to extend the life of existing arresting gear by analysis and testing of the gear to realistic loadings. We developed a realistic loading spectrum based on flight test data for the analysis and test.
By using strain life fatigue predictions methods, we predicted the fatigue life and damage tolerance of the assembly, and compared to the test data with excellent results.
Our experts have also conduct structural analysis of electrical equipment for seismic requirements using the latest building code seismic requirements. We also can help you with static, strength,fatigue life, damage tolerance calculations. And, our staff of stress analysts can prepare for you strength certification reports.
To provide you with an efficient and accurate stress analysis we apply finite element stress analysis and classical hand analysis as follows: