Abstract:To improve the mechanical treatment method for potato pulp，stress relaxation tests were performed with different feed quantities.Stress relaxation curves were constructed and changes in the modulus of elasticity with time were analyzed.Three generalized Maxwell models were established to describe the stress relaxation behavior of potato pulp，and the effects of three feed quantities on the stress-relaxation characteristics of potato pulp were analyzed.The results showed that a five-element generalized Maxwell model accurately and intuitively described the stress relaxation behavior of potato pulp with different feed quantities，with R2values greater than 0.994.The equilibrium of the modulus of elasticity and the relaxation time obtained with the model were not affected by feed quantity.However，smaller feed quantities resulted in greater elastic attenuation and faster stress relaxation，which are more conducive to briquetting.These results provide the technical parameters and a reference for optimizing the secondary processing and pretreatment of potato pulp.