Comprehensive Structural Analysis Services
All our projects are supported by substantiation data to demonstrate compliance with the applicable certification requirements. These analyses are used during design development to ensure structures have sufficient strength and rigidity, and meet the design life objectives.
Static Stress Analysis
Many designs can be analysed by applying the principles of statics and mechanics of materials. The structure is represented by classical idealisations and solved for internal stresses, deflections and structural instabilities such as buckling and crippling using hand and spreadsheet calculation techniques.
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Finite Element Analysis (FEA)
For more complex designs featuring multiple load paths or complicated shapes we employ finite element analysis software which breaks the component geometry down into thousands of small elements. The computer solves the relatively simpler equations that model each element and then assembles them into a larger set of equations that models the entire structure, enabling stresses and displacements to be extracted.
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Fatigue and Damage Tolerance (F&DT)
Depending on the certification requirements of the project fatigue and/or damage tolerance analyses may be required. A fatigue analysis is used to determine the onset of fatigue cracking which can then establish the safe life of a component, how many cycles of loading it can take before it needs to be replaced. A damage tolerance analysis is required for some structures, such as pressurised metallic fuselages. The analysis models the growth of assumed initial flaws in the structure under a prescribed loading spectrum, and is used to determine the number of cycles, e.g. flights, to reach a detectable but non-critical size to establish the inspection frequencies and methods, e.g. NDT (HFEC), that are sufficient to detect these flaws before they can compromise the integrity of the structure.
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Modal Analysis
This type of analysis identifies the natural frequencies of a design where structural response to input vibration is at a maximum. This information is used to ensure components are designed such that their natural frequencies do not coincide with forcing frequencies on the aircraft such from a rotor or propeller
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Frequency Response Analysis
Where a design is subjected to a high vibration environment a frequency response analysis models the behaviour of the structure under these conditions so the displacement and stresses caused by the vibration can be determined and compared with design life objectives.
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Resonance Assessment Profile (RAP) Testing
This practical analysis tests a structure by instrumenting it with accelerometers and applying excitation impulses. The resulting vibration response is measured by the accelerometers and this data is used to identify the natural frequencies of the structure, which is subsequently used to confirm they do not coincide with forcing frequencies on the aircraft.
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Ground Vibration Testing (GVT)
This practical analysis tests a structure by instrumenting it with accelerometers and applying input vibration at specific locations using transducers.
The transducers apply a known vibration input to the structure, the response of which is measured by the accelerometers and the resulting data is then used to validate the predicted behaviour of the structure.
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Let Gama Be Your Guide in Aircraft Structural Analysis
Allow Gama Aviation Design to help you navigate the complexities of aircraft structural analysis. With our extensive experience and proven procedures, we’re here to ensure your aircraft meets the necessary safety and regulatory requirements.
Contact Gama Aviation Design today, and let us take care of your structural analysis needs.
