Year/Date Of Issue: 2026
Version: 2026.1.1
Developer: Cadence/MSC
Developer website:
Quotion: 64bit
Interface language: En
The tablet: Present (TeAM SolidSQUAD-SSQ)
Description: CAEFatigue system
Advanced analysis algorithms for accidental impact
For many systems of the automotive and aerospace industries, it is necessary to perform a loading calculation, as well as to exclude the possibility of collision of individual components in conditions of strong vibration caused by shaking during operation. To date, an effective method of calculation in the frequency field has been developed, which allows to perform an assessment of durability and response within one calculation. Using data obtained from advanced analysis for random impact, it is possible to determine the average square levels of movement, speeds, accelerations and effort, as well as spectral power density (PSD) graphics, for both absolute and relative design responses. Additionally, the residual sum of squares (RSS) is calculated to account for all cross-series. New post-processing features allow you to compare the relative response of any node with the responses of other nearby nodes to check the probability of collisions of neighboring parts, to analyze the rattle. The maximum reaction is determined by the value of the average square value (i.e. 3.0*RMS) deviations from the corresponding probabilistic level obtained according to the distribution of Gauss or Raylei, or using a method that takes into account the number of response cycles. The results of calculations using the algorithm for calculating the response to accidental impact (Advanced Random Analysis) perfectly complement the tasks of predicting the reaction of the structure in the conditions of complex loading, which is found in many engineering tasks in a wide variety of industries.
Calculation of surrogate loads
When analyzing strength, it is very important to determine the characteristics of the current loads. Ideally, all loads used in analysis or in laboratory tests should be as accurate as possible in accordance with the values that are achieved during the operation of the product. In practice, the closest scenario to be implemented is to measure several events and input loads (taking into account their correlation) on prototypes of vehicles tested at the landfills and reproduce them in a laboratory or analytical environment. From the point of view of analysis, this is the most feasible and widely used method, but using it, the problem of acceleration of tests is acute. When modeling in the laboratory, especially when modeling individual parts or assemblies, it is necessary to simplify the loads, usually due to the availability of test equipment, reducing them to a single input load applied cyclically (for example, on the X-axis, then Y, and then Z), which creates significant difficulties. Two common approaches are currently being used. The first involves the application of a coverage procedure to the loads, according to which several loads are combined into one smoothed profile. In the classical application of this procedure, knowledge of the structure of the system is not required, so it does not give confidence that the resulting loads will result in the same values or the same distribution of damage. The second approach is to use the concept of the spectrum of fatigue damage (FDS), according to which a simplified load is created, causing similar damage to the hypothetical system with one degree of freedom, in which the resonance is caused by the applied load. Again, the real structure of the system or systems is not taken into account in this approach. The surrogate load method implements a new approach, which is a type of FDS method, but using the properties of a real system. The Surrogate Loading tool allows you to convert a complex multi-channel load, which has several events in time, into a simplified "surrogate load" that gives the results of calculations of loads and damages close to the results of complex loading, taking into account chronology.
Calculations of welds in frequency and time areas
The CAEFatigue system, the first in industry, provides the ability to perform a complete analysis of point welding, standard and special welds, in the frequency domain (Frequency Domain) in conjunction with the more traditional methods used in the time domain (Time Domain). It will allow for a fully automatic analysis of the vehicle, including for spot welding and welds, using the CF tool in both the frequency area and the temporary area.
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Cadence MSC CAEFatigue 2026.1.1 x64 (5.89 GB)
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