Fine dried noodles elasticity modulus measuring method based on pressure lever post-buckling

Abstract

The invention discloses a fine dried noodle elasticity modulus measuring method based on pressure lever post-buckling. A load measuring device is installed firstly, a static pressure head of the load measuring device is fixed on a base, a force sensor is arranged on a movable arm of the load measuring device, and then a dynamic pressure head is fixedly connected with the force sensor; a certain number of fine dried noodles cut to have corresponding length are respectively arranged between the static pressure head and the dynamic pressure head; and the amount of movement of the dynamic pressure head is determined according to the length of the fine dried noodle and an set intersection angle of the end part of a twisted curve, then the load measuring device is started again, the dynamic pressure head is driven by the load measuring device to load the fine dried noodles in a speed of 0.01mm / s, load corresponding to the amount of movement of the dynamic pressure head is measured by the load measuring device, and at last the fine dried noodle elasticity modulus is counted by a formula relationship. The invention uses pressure lever stability principle and large deflection theory of mechanics of materials to establish the relationship of axial compression, the end part intersection angle and pressure, establishes a counting method of the fine dried noodle elasticity modulus, has simple and convenient measuring method and high precision, and can control the length of the fine dried noodle elasticity modulus to be between 60 mm and 220mm.

Description

Determination method of elastic modulus of dried noodle based on post-buckling of compression bar technical field The invention relates to a method for measuring the mechanical properties of dried noodles, belonging to the field of mechanical detection of dried noodles, in particular to a method for measuring the elastic modulus of dried noodles. Background technique The elastic modulus of dried noodles is one of the main indicators for quality evaluation of dried noodles and is an inherent property of dried noodles. The elastic modulus of dried noodles is generally measured by the three-point bending method in engineering mechanics, and it is also measured by the stretching method. However, the three-point bending method has great limitations, such as being affected by the weight of the dried noodles, the span of the support point It cannot be very large. When the three-point bending deformation is performed under a certain span condition, the deformation length of the ve...

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Problems solved by technology

The purpose of the present invention is to provide a simple and easy-to-operate method for measuring the elastic modulus of dried noodles based on the post-buckling of the compression bar in order to solve the deficiencies in the current prior art that the measurement accuracy of the elastic modulus of the dried noodles is low and the setting of the measurement parameters is difficult to control.