mtjs / MathCAD / MathCAD的高仿免费版本 - SMATH STUDIO

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2014-05-27  mtjs

 由生活在俄罗斯圣彼得堡的数学家安德烈.伊万科夫(Andrey Ivashov) 在2005年开始开发编写的 SMATH STUDIO 被认为是免费数学软件里功能与MathCAD 最接近的。最新版本是 SMath Studio 0.97.5154 (10 February 2014) 安装文件1.74 MB,采用 .NET 架构和 Mono 开发,有Windows版本和Linux版本,我试用了一下,和使用MathCAD的感觉十分接近,甚至快捷键等都是一样的,软件安装后体积十分小才几M,却实现了与MathCAD等同的功能(我用的 MathCAD14 可是有几百M哦),令人惊叹。

Free mathcad alternative, SMath Studio

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I recently wrote about MathCAD Prime 2.0 and Maple 16 in an article titled Math for Engineers, in Design World.

Both MathCAD and Maple are powerful tools for doing engineering math, and are much better choices than the tool most commonly used for this: Microsoft Excel.

Yet, they’re not the only choices. Wikipedia lists 61 different computer algebra systems, 36 of which are free open-source software.

An embarrassment of riches.

William Hunter, from South Africa, recently wrote a note to me, mentioning two of his favorite free math programs: SMath Studio (which is conceptually similar to MathCAD), and Euler Math Toolbox (which is similar to Maple.)

Smath 300x212SMath Studio is a math program with a paper-like interface. It has quite a number of capabilities:

  • Solving differential equations
  • Graphing functions in two or three dimensions
  • Symbolic calculations including solving systems of equations
  • Matrix operations, including determinants
  • Finding roots of polynomials and functions
  • Symbolic and numeric differentiation of functions
  • Numeric integration
  • Simple multiline looped programs
  • User defined functions

The software was created in 2005 by Andrey Ivashov, a St. Petersburg mathematician. (St. Petersburg is one of my favorite software development cities.) It’s written using the .NET framework, is available for Windows and Linux, and can be downloaded from the SMath Studio Forum. The forum also shows some great examples of the types of problems that can be solved with Smath. Here are a few of them:

  • Non-linear deflection of a flexible cantilever pdf
  • Batch chemical reactor pdf
  • Lateral force developed by a tire, using an early Pacejka model. pdf
  • NASA’s Atmospheric Model (SI Units) pdf
  • Using an electromagnetic shaker to drive a single degree of freedom system pdf
  • Simple Estimates of a single prop, naturally aspirated, aircraft’s performance pdf
  • Ramp Design – testing for max allowable bending moment and deflection (US Customary Units) pdf
  • Column Design – based on AISC Manual of Steel Construction (US Customary Units)pdf
  • Engine Heat Rejection Calcs – good example of working with relative temperature differences (US Customary Units) pdf
  • Calculate the Area Properties of Composite Rectangular Areas (US Customary Units)pdf

Euler Math Toolbox has been developed by René Grothmann, a mathematician at the Catholic University of Eichst?tt-Ingolstadt, Germany, since 1988. It uses a matrix language similar to Matlab, and is probably best classed as a numerical analysis program. It handles symbolic computations via Maxima, an open-source computer algebra system based on a 1982 version of Macsyma.

My point here isn’t to review these programs, but rather point out that capable free tools do exist. I’m interested in hearing about your experiences with free math tools. Which ones have you used, and how have they worked for you?

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