Method for judging inflection point of conical rubber spring bonding experiment

The invention provides a method for judging an inflection point of a conical rubber spring bonding experiment comprising the following steps: an experiment curve generation step: obtaining experiment data of a conical rubber spring bonding experiment, and generating an experiment curve, the experiment data comprising a force value, displacement and time; a data processing step: acquiring a force value difference and a time difference between adjacent data points on the experimental curve, and screening out an effective force value difference according to a preset condition; a change rate calculation step: dividing the effective force value difference by the corresponding time difference to obtain a change rate; and an inflection point judgment step: generating a change rate curve according to the change rate and the experimental data, if the change rate curve has an obvious curve section which firstly descends and then ascends, judging the cause of the occurrence of the inflection point according to the occur