Structural design of the acrylic vessel for the Jinping Neutrino Experiment

TL;DR

This paper presents the structural design, analysis, and optimization of the acrylic vessel for the Jinping Neutrino Experiment, ensuring safety, stability, and compliance with operational conditions through finite element analysis.

Contribution

It introduces a developed and optimized structural scheme for the acrylic vessel, including stability analysis and effects of various failure scenarios, enhancing safety and reliability.

Findings

Stress and displacement meet design requirements

Vessel remains stable under compression

Safety maintained even if ropes fail

Abstract

The Jinping neutrino experiment is designed to have multiple purposes in the China Jinping Underground Laboratory. Following the acrylic vessel design requirements proposal, a structural scheme has been developed and optimized. Subsequently, the stability of the acrylic shell structure was calculated using finite element analysis, as well as the load-bearing capacities under various working conditions. Further, the effects of temperature changes, rope failures, and Young's modulus of the ropes on the static behavior of the structure were analyzed. The results indicated that the stress level and structural displacement of the structure scheme satisfies the design requirements, as well as the stability of the vessel under compression. Moreover, the stress and displacement of the acrylic shell satisfies the given working conditions and temperatures. The structural scheme ensures basic safety if the rope fails.