Design and Model Test of Structural Monitoring and Assessment System for Trimaran

Abstract

Due to the unique structural design of multihull, the structural response on trimaran is often more complex than the response of monohull in navigation. In order to ensure the safety of trimaran navigation and predict the potential damage of local structure, the structure monitoring technology is applied. According to the structural characteristics of trimaran, structural monitoring and assessment system for multihull is designed and introduced in detail, and corresponding model test is taken to demonstrate its effectiveness. The selfpropelled trimaran model is installed with sensors in different longitudinal positions to monitor the variety of structural responses in irregular waves. And three real-time structural strength assessment methods in the system are used respectively to indicate the structural state about hull longitudinal strength, local yielding strength and fatigue strength. The influence of different wave azimuths and monitoring positions on structural strength assessment is analysed. Finally, these measured data and analyses results will provide technical support for design and installation of the monitoring system on actual trimaran.

Design Process and Advanced Manufacturing of an Aquatic Surface Vehicle Hull for the Integration of a Hydrogen Power Plant Propulsion System

“…For the preliminary design of the trimaran, the state of the art was taken into account. Recent investigations on the design of trimaran have researched the structure [35][36][37][38], the…”

“…For the preliminary design of the trimaran, the state of the art was taken into account. Recent investigations on the design of trimaran have researched the structure [35][36][37][38], the outrigger layout [39][40][41][42], optimization to reduce resistance [42][43][44][45], seakeeping and stability performances [46][47][48], and the design method itself [49][50][51]. From a structural point of view, Daidola et al [35] discussed preliminary structural design procedures for a large highspeed sealift trimaran, while Tang et al [36] applied structure monitoring technology, and Jia et al [37] proposed a lightweight design of a trimaran bulkhead using structural topology optimization.…”

“…Recent investigations on the design of trimaran have researched the structure [35][36][37][38], the outrigger layout [39][40][41][42], optimization to reduce resistance [42][43][44][45], seakeeping and stability performances [46][47][48], and the design method itself [49][50][51]. From a structural point of view, Daidola et al [35] discussed preliminary structural design procedures for a large highspeed sealift trimaran, while Tang et al [36] applied structure monitoring technology, and Jia et al [37] proposed a lightweight design of a trimaran bulkhead using structural topology optimization. According to Khoob et al [38], for a wave-piercing trimaran, transverse torsion moments and shear forces are significant in head seas, while transverse bending moments have larger response magnitudes in oblique seas.…”

Contribution to the Seakeeping Analysis of Multihull Warships

“…The main advantage of the trimaran studied for this paper is to have an smaller floating area rather than its equivalent monohull, as well as a smaller longitudinal inertia moment and a longitudinal metacentric height (Riola and Perez 2012) [23] (Tang, 2019) [28].…”

Linear Longitudinal Strength Analysis of a Multipurpose Cargo Ship under Combined Bending and Torsional Load

“…They concluded that warping-based theory provides a better model of the behaviour of prismatic thin-walled sections because longitudinal deformation is considered. Tang et al [8] used three real-time structural strength assessment methods to identify hull longitudinal strength, yield local strength, and fatigue strength. The system evaluates short-and long-term structural strength.…”