Method of calculation estimation of design safety factor of static strength based on actual road testing of KAMAZ 63934 truck

Introduction (problem statement and relevance). Driving axle body (housing) parts take loads from the road and sprung parts. Their failure leads to emergency risk, therefore the load-bearing structure shall be carefully checked, especially regarding strength properties. Current requirements and regulations regarding tests and calculation research of driving axles stipulate and regulate minimum requirements for static strength, however a lot of automobile manufacturers go beyond the minimum requirements.
The purpose of the study is forming the method of static strength design safety factor calculation estimation based on actual (field) testing.
Methodology and research methods. According to the purpose and objectives of the study, the following methods were assigned: the method of actual (field) testing; the methods of schematisation; the statistical data processing methods; the damageability and pseudo-damageability assessment methods; the procedure of constructing the fatigue curve.
Scientific novelty and results. The results are formulated as a description of the study that has been carried out and numerical estimate of the static strength design safety factor based on actual (field) testing using force measuring wheels through the example of KAMAZ 63934 study. The scientific novelty consists in the procedure of backward calculation of the static strength design safety factor.
Practical significance is reflected in the form of the test program, overload factor tables, description of data processing for calculation estimation of the static strength design safety factor. The obtained data can be useful and applicable by engineers and researchers in project design activities when developing running gear elements for trucks and when setting requirements for their durability.

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