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To construct an animal model with a high consistency of trigeminal neuralgia, this paper systematically reviewed and summarized the existing animal models based on the etiology and pathogenesis analysis of Chinese and western medicine, clinical diagnostic criteria and evaluation indexes of animal models. Methods Literatures on animal models of trigeminal neuralgia were consulted through CNKI and PubMed databases, the etiology and pathogenesis of Chinese and western medicine in the treatment of TN, diagnostic criteria of Chinese and western medicine, model replication objects in common animal models of trigeminal neuralgia, model replication methods and consistency of clinical manifestations of Chinese and western medicine were summarized and analyzed. Results At present, the most widely used model is the "infraorbital nerve injury" surgical model, which has high similarity in pathological manifestations with the clinical features of trigeminal neuralgia. Secondly, the chemical induction model of "penicillin injection" showed significant effect of inducing acute pain-like reactions. The photochemical induction model can effectively avoid the influence of factors such as tightness during surgical modeling process on the experimental results. Conclusion The current modeling method of integrated traditional Chinese and western medicine is still in the stage of exploration and has not formed a mature theoretical system. Therefore, we should actively invest more resources to develop animal models more closely related to traditional Chinese medicine (TCM) syndromes in future research. The purpose is to provide strong theoretical basis and experimental support for the treatment of trigeminal neuralgia with integrated Chinese and western medicine. [ABSTRACT FROM AUTHOR]

Resistance strain measurement technique is a strain measurement technique of single point. When it is used for stress state measurement of complex structures with larger stress gradient, we need to locate the position of point in advance, and attach a strain rosette on it, which makes the measurement rather complicated. Three-dimensional digital image correlation ( 3D-DIC ) can obtain the full-field deformation field of structure surface to be detected and reveal intuitively the position of the point to be detected and its corresponding strain state. Based on a tensile test of an eccentric specimen, the strain state results were compared between 3D-DIC and strain gauge and finite element analysis. Experimental results indicate that the measurement accuracy of 3D-DIC is not as good as that of strain gauge, and that 3D-DIC can still provide rather accurate results. 3D-DIC has unique advantage over strain gauge and therefore is very appropriate for strain state measurement of complex structure with larger stress gradient. [ABSTRACT FROM AUTHOR]

When stress state of dangerous point of structure surface is measured with resistance strain measurement technique, the selection of strain rosette is of great importance. To measure stress state of point with larger stress gradient, five different strain rosette schemes, i.e.45°-3 rectangular rosette, 60°-3 equiangular rosette, 120°-3Y rosette, 45°-4 sector rosette and multiple uniaxial strain gage adhesion, for convenience multiple SG is called later, were studied in detail to obtain stress state of point to be measured, respectively. Finite element analysis software ANSYS was used to analyze numerically stress state of the same point with strain rosette attached. The differences as well as relative errors between different strain rosette schemes and numerical results were analyzed. We concluded that differences exist by using different strain rosette scheme and the multiple SG are more accurate than others. [ABSTRACT FROM AUTHOR]