真实/指数应变 即true strain / logarithmic strain: εtrue=lnL1L0 真实的应变,是基于变形后的长度积分得到的,因为表现形式是指数的形式,所以也可以称为指数应变。 名义/工程应变 nominal strain / engineering strain: εnominal=ΔLL0 名义应变,”名义“是指我们不考虑一步步的中间过程,只看开始和结尾,根据...
名义/工程应变：在工程计算中，将初始长度与最终长度的比值减去1作为应变的量度，即$text{工程应变} = frac{text{最终长度} text{初始长度}}{text{初始长度}}$。它不考虑变形过程中的细节，简化了变形的复杂性。真实/指数应变：基于变形后的长度进行积分求得，更准确地反映了材料在变形过程中的实际...
工程应变，即名义应变，指的是在工程计算中，将初始长度与最终长度的比值作为应变的量度。它不考虑变形过程中的每一个微小步骤，简化了实际变形的复杂性，便于工程应用。真实应变，或称为指数应变，基于变形后的长度进行积分求得。真实应变的计算方法更接近实际变形情况，但由于其指数形式，因此得名。在材料...
To show the differences between the strain rates, equations were presented for the engineering strain rate and strain as a function of true strain rate. To deform the specimen at constant true strain rates at 600–2500 s −1 , a bi-linear incident pulse was necessary. Furthermore, a ...
True strain = ln(1 + engineering strain)where ln designates the natural log True stress = (engineering stress) * exp(true strain) = (engineering stress) * (1 + engineering strain)where exp(true strain) is 2.71 raised to the power of (true strain). ...
Take nominal strain as 0.1. To find the true stress value: Enter the engineering strain as 0.1. The true strain calculator will return 0.09531 as the value of the true strain. Fill in the engineering or nominal stress as 8 MPa. Using the true stress calculator: σ=8×(1+0.8)=8.8 MPa...
The relation between the stress-strain is described by the stress-strain diagram. The ratio of the stress to the strain is called the modulus of elasticity. As per the Hooke's law of proportionality, the stress is directly proportional to the strain up to the elastic limit of th...
{n}^t\)governs the strain at which the material reaches peak stress under hydrostatic quasi-brittle tensile cracking. Similarly, the parameter\(B_\text {n}^c\)governs the displacement at which the material reaches its crushing strength under hydrostatic compression. Once the parameters defining ...
Unlike rigid scoliosis braces, the Scoliosis Activity Suit has been designed through advanced engineering and human biomechanical analysis to stimulate and engage deep-layer “intrinsic” spinal muscles while you perform the normal activities of daily living. Reduced Spinal Rotation & “Torque” on the...
Rock engineering for applications such as roadways is one of the basic projects of national economic construc- tion and a vital support for the development and progress of society. However, during the excavation process, disasters such as deformation and failure severely affect the stability of the...