It is probable to removing shrinkage stress thoroughly using expansive monomer on the principle of copolymerization.
利用膨胀单体共聚有可能根本消除收缩应力。
The main reason of shrinkage stress during curing period is the change from distance between monomer molecules to covalent distance .
树脂固化时收缩应力的主要原因是单体之间的分子间距离缩短变为共价距离。
The example shows that quite reasonable calculation results of humidity field and shrinkage stress of interface can be obtained by the model.
算例结果表明,应用该模型可以获得较为准确合理的接触面湿度场及干缩应力计算结果。
The effect on shrinkage deformation of fibre winding composites were considered by discussing the winding tensile resin thermo-shrinkage stress and the mandrels.
本文从纤维缠绕张力、树脂收缩、热应力、芯模等方面探讨了对纤维缠绕复合材料制品收缩变形的影响。
The effects of polypropylene fiber on the plastic shrinkage stress and plastic shrinkage ratio of the mortars were investigated by use of a self-designed measuring device.
采用自行研制的水泥砂浆塑性收缩应力测试装置和非接触式测长装置,分别研究了低掺量的聚丙烯纤维对水泥砂浆塑性收缩应力和塑性收缩率的影响。
The large shrinkage stress and thermal stress induced by ineffective measures for concrete curing and temperature insulation are the main causes at middle and later stages.
由于后期养护和保温措施不力产生较大的收缩应力和温度应力是引发中后期裂缝的主要原因。
Calculating method for the long-term deflection of r. C. beams with cracking section, considering the nonlinear creep stress and shrinkage stress, is presented in the paper.
本文研究考虑非线性徐变和收缩时钢筋混凝土梁长期挠度计算方法。
The mathematic expressions of temperature stress and dry shrinkage stress are deduced. The time-varying model based on multiple factors of concrete face stress is established.
推导了温度应力分量和收缩应力分量的数学表达式,建立了面板应力多因素时变分析模型;
The humidity would diffuse a large scope as there are cracks in the cement-based composite, resulting in the increase of shrinkage stress which is not benefit for crack control.
当有裂缝存在时,湿度扩散的范围更深、更广,相应的湿度应力则会更大,不利于裂缝的预防与控制。
Marly crack and deterioration of many bridge deck overlays have been attributed to the traffic load, nature factor and high thermal or shrinkage stress development in the concrete.
混凝土桥面铺装在交通荷载、自然因素、温度与收缩应力综合作用下,普遍出现了早期开裂与破坏。
Cracks design of reinforced concrete structure focuses on the cracks caused by temperature and shrinkage stress which is traditionally controlled through "resistance" and "relieving".
钢筋混凝土框架结构的裂缝设计主要是针对温度和收缩应力产生的裂缝,历来有“抗”与“放”两种不同的处理方法。
The paper studies the simplification calculation method of concrete shrinkage and the calculation of temperature and shrinkage stress that takes the effects of concrete creep into account.
讨论了混凝土收缩简化计算方法及混凝土徐变对温度及收缩应力计算的影响;
Is mainly the size effect and solidification, shrinkage, stress and other issues clearly, to avoid or reduce the segregation, iron manhole cover deformation and crack defects.
主要是明显的尺寸效应和凝固、收缩、应力等问题,避免或减少铸铁井盖的成分偏析、变形、开裂等缺陷的产生。
The stress produced during the process of drying had a certain relation with moisture gradient, shrinkage, moisture and stress index.
干燥过程中产生的应力与含水率梯度、干缩量和含水率、应力指标,存在一定的相关关系。
HCSA, mass, temperature stress, shrinkage compensating.
大体积,温度应力,补偿收缩。
Suggest the nonlinear elastic Constilutive model taking into the account of strain-softening, shear dilatancy(shrinkage)properties and stress path.
提出考虑土的应变软化、剪胀(剪缩)性和应力路径影响的非线性弹性模型。
In injection molding, the residual stress and shrinkage of the product are affected by processing conditions directly.
注塑成型工艺参数对制品的最终残余应力和收缩有着直接的影响。
The effect of hydrothermal treatment on drying rate, ratio of tangential shrinkage to radial shrinkage and drying stress is discussed.
讨论了热湿处理与干燥速度、弦径向干缩比和干燥应力之间的关系。
Shrinkage and shrinkage porosity, stress and deformation often occurs during the production of heavy steel casting.
大型铸钢件在实际生产中易产生缩孔缩松、应力变形等缺陷。
Wood drying shrinkage element introduced in the model may explain the original force of producing drying stress of shrinkage differential of different layers.
在模型中引入与木材含水率密切相关的干缩元件,解释各层的干缩差异是产生干燥应力的源动力。
But the instruments of testing heat check, stress and linear shrinkage of casting alloy at present are not only inconvenient in operation but also unitary in function.
已有的测定铸造合金热裂、应力、线收缩参数的仪器不仅操作不便,而且功能单一。
Thirdly, we apply the theory of increment method to analyze the stress field of basement in construction period under the action of temperature and shrinkage strain by finite program ANSYS.
再次,运用增量法的原理,用ANSYS分析地下室结构施工期间在温度、收缩变形作用下的应力场。
According to microstructure analysis, cracks in bolster and side frame produced by Furan self-cured sand can be classified into shrinkage hot cracks and stress hot cracks.
显微组织分析表明,呋喃树脂砂生产摇枕、侧架所出现的裂纹按照产生原因分为缩裂纹和拉裂纹。
A new multifunctional device for testing linear shrinkage, stress and heat check of casting alloy easily and quickly is developed in the paper.
本文研制一种新型铸造合金线收缩-应力-热裂特性多功能测定仪,它可以方便准确的测定金属热裂、应力、线收缩特性。
A new type of multi-function system for testing linear shrinkage, stress and hot cracking of casting alloy is introduced in the paper.
介绍一种新型铸造合金线收缩-应力-热裂特性综合测试系统。
The change of the components leads to high temperature stress, as well as remarkable shrinkage and deformation; also, its characteristics induce friability and fissility of concrete.
现代混凝土组分的变化导致了温度应力高、收缩变形大,早强和高强也引发了混凝土的早裂和高脆性。
The result indicated that the residual stress in the product produced by optimized project was decreased obviously, the volumetric shrinkage was homogeneous and the defect became slight.
结果表明,优化工艺后成型的复杂壳体制件的残余应力明显减小,体积收缩也比较均匀,缺陷明显减轻。
The tensile stress induced by restrained thermal and autogenous shrinkage deformations was the main driving force of cracking in concrete at early age.
温度变形和自生收缩变形等受约束形成的拉应力,是引起混凝土早期开裂的主要驱动力;
The tensile stress induced by restrained thermal and autogenous shrinkage deformations was the main driving force of cracking in concrete at early age.
温度变形和自生收缩变形等受约束形成的拉应力,是引起混凝土早期开裂的主要驱动力;
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