Abstract: Solve both the problem of mechanical damage caused by compressing, impacting and dropping down to ground during harvest, transportation and storage, and the problem of cutting slice and pressing during the process of by-products, the mechanical properties were tested. The results showed that there is a maximum in both yield force and break force with increasing loading rate; The more mature degree and the larger size, and the micro tissues of fruits more easily are destroyed and more easily break; The properties of anti-compression of the flesh around equator are lower than that of the other positions. The results provide a theoretical basis for the design for parameters processing machines improved.

Key words: apple-pears, static loading, compression, mechanical properties