Carbon Fiber Material was Added

StructureHelperCommon/Models/Forces/StrainTuple.cs

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+using StructureHelperCommon.Services.Forces;
+
+namespace StructureHelperCommon.Models.Forces
+{
+    /// <inheritdoc/>
+    public class StrainTuple : IForceTuple
+    {
+        /// <inheritdoc/>
+        public double Mx { get; set; }
+        /// <inheritdoc/>
+        public double My { get; set; }
+        /// <inheritdoc/>
+        public double Nz { get; set; }
+        /// <inheritdoc/>
+        public double Qx { get; set; }
+        /// <inheritdoc/>
+        public double Qy { get; set; }
+        /// <inheritdoc/>
+        public double Mz { get; set; }
+
+        /// <inheritdoc/>
+        public object Clone()
+        {
+            StrainTuple forceTuple = new StrainTuple() { Mx = Mx, My = My, Nz = Nz, Qx = Qx, Qy = Qy, Mz = Mz };
+            return forceTuple;
+        }
+        public static StrainTuple operator +(StrainTuple first) => first;
+        public static StrainTuple operator +(StrainTuple first, ForceTuple second)
+        {
+            return ForceTupleService.SumTuples(first, second) as StrainTuple;
+        }
+    }
+}