【摘要】：研究了外加電場(chǎng)作用下柔性電致伸縮聚合物薄膜的整體收縮、表面局部屈曲與整體失穩(wěn)3種變形模式.在外加電場(chǎng)作用下,靜電力(即Maxwell應(yīng)力)成為薄膜變形的主要驅(qū)動(dòng)力.通過力平衡和小擾度攝動(dòng)法,獲得電致伸縮聚合物薄膜發(fā)生表面局部屈曲和整體失穩(wěn)變形模式的轉(zhuǎn)換條件;通過數(shù)值算例對(duì)這2種變形模式與電場(chǎng)強(qiáng)度、薄膜尺寸、泊松比、介電常數(shù)和電致伸縮系數(shù)等之間的相關(guān)性進(jìn)行討論.分析結(jié)果顯示,通過調(diào)節(jié)外加電場(chǎng)強(qiáng)度和材料參數(shù),能夠調(diào)控電致伸縮聚合物薄膜的變形模式.
[Abstract]:The three deformation modes of flexible electrostrictive polymer films, such as global shrinkage, local buckling and global instability, have been studied under the action of an applied electric field. Under the action of external electric field, electrostatic force (Maxwell stress) is the main driving force of film deformation. By means of force balance and small perturbation method, the conversion conditions of local buckling and global instability deformation modes of electrostrictive polymer films are obtained, and the electric field strength, film size, Poisson's ratio are calculated by numerical examples. The correlation between dielectric constant and electrostrictive coefficient is discussed. The results show that the deformation mode of electrostrictive polymer films can be regulated by adjusting the applied electric field strength and material parameters.
【作者單位】： 集美大學(xué)誠(chéng)毅學(xué)院;廈門大學(xué)材料學(xué)院福建省特種先進(jìn)材料重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(11572271,11472233)
【分類號(hào)】：TB383.2

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